The laptop does not see the bootable USB flash drive in the BIOS

BIOS (UEFI) does not see the bootable USB flash drive.

Here is such a dialogue I recently had with one of my friends, we, of course, eliminated the problem of invisibility, but the conversation was long

In general, most often this problem is encountered when reinstalling Windows, and sometimes it is far from easy to solve it. In fact, there are many reasons for invisibility, but I will highlight the most basic ones in this article. By going through them, I think you can easily configure and install a new Windows.

The main reasons why the BIOS does not see the bootable USB flash drive

1) Incorrectly recorded bootable USB flash drive with Windows

This is perhaps the most common reason. Many users create bootable USB drives in one scenario: they simply copy files from a Windows CD / DVD to a USB flash drive. At the same time, some users say that everything works.

Perhaps this is true, but it is not entirely correct. To create bootable flash drives, it is best to use special utilities (especially since there are quite a few of them!).

I recommend trying the following utilities: Ultra ISO, Rufus, WinSetupFromUSB, WintoFlash, Windows 7 USB dvd download tool (utility from Microsoft).

A complete list of utilities for creating bootable USB drives. you can see here

Example: how to properly write a bootable USB flash drive in Rufus

1) First step: insert the USB flash drive into the USB port of the computer. We copy all important data from it to the hard disk (if any). Then it can be formatted (optional).

2) Second action: the Rufus program must be run as administrator (for this it will be enough to right-click on the executable file “rufus.exe”, select it in the appeared context menu);

3) Now go to the Rufus settings (the screen below explains it for each item):

  • column “Device”: select our USB flash drive for recording;
  • Under the number 2 in the screenshot, there is a button that sets an ISO image file with Windows OS, intended for you to write to a USB flash drive (just specify it);
  • column “Partition scheme”: “GPT for computers with UEFI” (if you have a new PC / laptop, more details about it here);
  • column “File system”: select FAT 32 (usually, it is installed by default);
  • The last button (“Start”). start recording process.

Before recording, Rufus, by the way, will warn you that all data on the flash drive will be deleted. If you didn’t manage to save something. save after formatting the flash drive. data recovery will not be so easy.

That, in fact, is all, a USB flash drive recorded in this way should work 100% and be visible, in almost any modern BIOS version (UEFI).

2) Boot priority is not set in BIOS (UEFI)

So that you can boot from the flash drive and start installing Windows. it is necessary to configure the BIOS / UEFI correctly (and there are always difficulties with this, especially for novice users).

First you need to enter the BIOS settings.

In order not to repeat myself, I give a link to my previous article, which describes in detail how to enter the BIOS, which buttons and from which manufacturers to press.

The BIOS has a boot priority (sometimes called the boot queue): for example, it first checks a floppy disk for boot records, if not, then the hard disk, then the CD drive, etc. As soon as boot records are found on some media, the computer will boot from it.

Our task: to change the boot priority so that first of all the computer checks the boot records on the USB flash drive, and then on the hard drive.

To do this, the BIOS / UEFI has a BOOT section. For example, the screenshot below illustrates the following download priority:

UEFI Boot | How to Boot From USB Flash Drive (USB Device Not Listed in Boot Order : Solved)

  • CD / DVD discs;
  • HDD.

Naturally, with this setting. no matter how much you insert a USB flash drive into the USB port. the computer will not see it!

By changing the boot priority to your own. that is, putting USB in the first place, instead of a CD / DVD drive, you can boot from a USB flash drive (do not forget to save the settings.F10 key. Or Exit: Save and Exit).

Boot section. boot setup (example of UEFI settings)

What else I want to note: various BIOS versions can differ in menus, sections, in general appearance.

The screenshot below shows the settings for the “Award Software Advanced BIOS Features”. in it, in order to boot from a USB flash drive, you need to opposite the item “First Boot Device” (note: the first boot device). put the USB-HDD (this is the flash drive). Next, save the settings (F10 key).

In the BIOS, laptops usually always have a BOOT section. Having entered it, you also need to put the device in the first place: USB Storage Device, USB-HDD, USB device, etc. (depending on your laptop model, BIOS version).

3) Secure Boot is not disabled in BIOS (or wrong flash drive)

Secure Boot is a relatively new feature designed to prevent unwanted software from running when the computer is turned on. In all modern laptops and computers, this option is available (until about 2013, it was almost never met). Secure Boot support Windows 8, 8.1, 10.

  • Create a UEFI flash drive, thus you do not have to disable Secure Boot in the BIOS. How to create such a bootable USB flash drive is described here;
  • Disable Secure Boot in BIOS and install Windows OS (by the way, for example, Windows 7 does not support this function at all).

To disable Secure Boot. you need to enter the BIOS and open the BOOT section (in most cases this is the case, but sometimes this function is contained in the “Advanced” section).

As a rule, in BOOT, you need to change the following (for example, a Dell laptop):

  • Boot List Option: change UEFI to Legacy;
  • Fast Boot: Change Enabled to Disabled (ie disable “fast” boot);
  • don’t forget to change the boot priority (see example screenshot below).

On newer computers and laptops, some of the USB ports are in the old “format”. USB 2.0, the other in the new. USB 3.0. When copying files to a USB flash drive. there is no big difference which USB to use (well, except for the data transfer speed).

But when installing Windows. the choice of USB port plays a key role! The point is, Windows 7 does not support USB 3.0 installations! Those. by inserting a bootable USB flash drive into such a port. you will not be able to install Windows 7!

How to tell a USB 3.0 port from a USB 2.0 port

Everything is very simple. USB 3.0 are marked in blue (or blue): moreover, both plugs and ports are marked. Take a look at the two photos below. everything is clear on them.

Another case in point: USB 2.0 and USB3.0

Note: Windows 8, 10. can be installed using USB 3.0 (USB 3.1) ports.

Without going far from the USB ports, I would also like to dwell on the following point: does the USB port work at all? If you have an “old” Windows OS installed, and it still “somehow” works (and in most cases it does). try to boot the computer and check the port.

I recommend paying special attention to the USB ports located on the front panel of the system unit, on keyboards, adapters, etc.

Often, the reason lies precisely in this: for example, one friend of mine could not install Windows, because he connected a bootable USB flash drive to the USB ports on the keyboard, and these ports began to work only after booting Windows.

Therefore, a simple advice: try connecting the flash drive to another USB port (preferably USB 2.0), on the back of the system unit.

6) “Brutal” collection with Windows

Not much to comment on here. any builds can cause anything (I, of course, exaggerate somewhat, but still.).

In general, I recommend using a licensed version of Windows OS. this way you will not only lose less time on debriefing with the installation of the OS, but also further, in the process of work, settings, etc.

7) “Old” PC, does not support booting from flash drives

If you have an old computer, then it is quite possible that it may not support the option of booting from USB flash drives at all (however, in this case, you will not be able to configure the BIOS. it simply will not have an item for selecting USB-Flash Drive ( i.e. it will be obvious)).

If you have an old PC and want to install from a USB stick, there are several ways:

  • update the BIOS version to a newer one that supports booting from a USB flash drive (If, of course, there is such an update on the website of your hardware manufacturer. Important! Updating the BIOS may cause the PC to malfunction!);
  • use a boot manager like Plop Boot Manager. In this case, you first boot into this manager (by the way, you can burn it to a CD), and then select boot from a USB device in it and continue with the installation.

Perhaps the bootable USB flash drive is not visible not only when the computer boots, but in general: on any PC, and not in any Windows? You can learn more about this in this note.

Causes of the problem

One of the most common reasons why the BIOS does not see a USB flash drive is the wrong boot mode.

Modern laptops and personal computers have two modes: UEFI and Legacy. As a rule, the first mode is activated by default. If the bootable flash drive was written for another mode, which is currently disabled, then you will see this error.

The second reason why the BIOS does not see USB is an incorrectly written installation flash drive. The fact is that many users, writing the Windows installer to a USB flash drive, simply copy the ISO image. You can’t do that. Thus, you will not make the USB flash drive bootable. Even worse is when files are simply copied to a USB flash drive.

Activating the correct boot mode

If everything is clear with the incorrect recording of the bootable flash drive, then setting the correct boot mode may be an unfamiliar procedure for many. Let’s take a concrete example to figure out how to change the boot mode.

Today you can find at least three types of BIOS. And regardless of whether you have an old BIOS or a new one, the menu items may differ from those that will be indicated below, however, they always have approximately similar names and nesting.

If the BIOS does not see the files on the flash drive, then you can change the boot mode as follows:

  • Open the BIOS (restart the computer and press the “Delete” key during its restart).
  • Find and open the “BOOT” tab.
  • Find the “Boot List Option” and change its value to the opposite.
  • Exit BIOS by applying the changes you made.

BIOS does not see a bootable USB flash drive: what to do

Today, Windows installation is most often carried out using specially prepared flash drives, which have almost completely replaced optical disks. The process of installing the operating system itself is not difficult, but it often happens that the old BIOS does not see the bootable USB flash drive.

In this topic, we will tell you what reasons can lead to this malfunction and what to do if the BIOS does not see the USB flash drive.

Disabling Secure Boot

It may be that the boot drive you are using only supports Legacy mode. In this case, it may be that the BIOS does not see the USB flash drive due to the enabled Secure Boot mode.

To find out if this mode is enabled, open the search window by pressing the WinR keys, and then enter msinfo32. In the corresponding window, you can proHonor whether this function is enabled or disabled.

Disabling Secure Boot is very simple. Below is an example for Asus laptops:

  • Enter BIOS.
  • Open the “Boot” tab.
  • Find the “Secure Boot” field and click on it.
  • Set the “OS Type” to “Other OS”.

If you have an HP laptop, then this mode is deactivated a little differently: in BIOS, you need to go to the “System Conficuration” tab, where you can disable this option.

We hope our material has helped you figure out what to do if the BIOS does not see the USB flash drive and why this can happen. Leave your questions on this topic below, and we will help you quickly solve them.

Boot Legacy and EFI, Secure Boot

The most common reason that a bootable flash drive is not visible in the Boot Menu is a mismatch between the boot mode that is supported by this flash drive and the boot mode set in the BIOS (UEFI).

Most modern computers and laptops support two boot modes: EFI and Legacy, while often only the first is enabled by default (although it happens the other way around).

If you write a USB drive for Legacy mode (Windows 7, many Live CDs), and only EFI boot is enabled in the BIOS, then such a flash drive will not be visible as bootable and you will not be able to select it in the Boot Menu.

Solutions in this situation can be as follows:

  • Enable support for the desired boot mode in the BIOS.
  • Burn the USB flash drive differently to support the desired boot mode, if possible (for some images, especially not the newest ones, only Legacy boot is possible).
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As for the first point, most often it is required to enable support for Legacy boot mode. This is usually done on the Boot tab in the BIOS (see How to enter the BIOS), and the item that needs to be enabled (set to Enabled) may be called:

  • Legacy Support, Legacy Boot
  • Compatibility Support Mode (CSM)
  • Sometimes this item looks like an OS selection in the BIOS. Those. the item name is OS, and options for item values ​​include Windows 10 or 8 (for EFI boot) and Windows 7 or Other OS (for Legacy boot).

Additionally, when using a bootable USB flash drive that only supports Legacy booting, you should disable Secure Boot, see How to disable Secure Boot.

On the second point: if the image being written to the USB flash drive supports booting for both EFI and Legacy mode, you can simply write it differently without changing the BIOS settings (however, images other than the original Windows 10, 8.1 and 8 may still need to be disabled. Secure Boot).

The easiest way to do this is using the free program Rufus. it makes it easy to choose which type of boot the drive should be written for, the main two options are MBR for computers with BIOS or UEFI-CSM (Legacy), GPT for computers with UEFI (EFI boot).

Note: if we are talking about the original image of Windows 10 or 8.1, you can record it in the official way, such a flash drive will support two types of boot at once, see Bootable Windows 10 flash drive.

BIOS does not see the bootable USB flash drive in the Boot Menu. how to fix

Guides for installing Windows from a USB flash drive or just booting a computer from it include simple steps: set boot from a USB flash drive to BIOS (UEFI) or select a bootable USB flash drive in the Boot Menu, but in some cases the USB drive is not displayed there.

In this manual, in detail about the reasons why the BIOS does not see the bootable USB flash drive or it does not show it in the boot menu and how to fix it. See also: How to use the Boot Menu on a computer or laptop.

Additional reasons that the flash drive is not displayed in the Boot Menu and BIOS

In conclusion, there are some more nuances that, in my experience, are not fully understood by novice users, which causes problems and the inability to boot from a USB flash drive in the BIOS or select it in the Boot Menu.

  • In most modern BIOS versions, in order to install a boot from a USB flash drive in the settings, it must first be connected (so that it is detected by the computer). If it is disabled, it is not displayed (connect, restart the computer, enter the BIOS). Also keep in mind that the “USB-HDD” on some older motherboards is not a USB stick. Read more: How to set boot from a USB flash drive to BIOS.
  • In order for the USB drive to be visible in the Boot Menu, it must be bootable. Sometimes users simply copy the ISO (the image file itself) to a USB flash drive (this does not make it bootable), sometimes they also manually copy the contents of the image to the drive (this only works for EFI boot and only for FAT32 drives). Perhaps it will be useful: The best programs for creating a bootable USB flash drive.

It seems that everything. If I remember any other features related to the topic, I will definitely add the material.

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Why do I have only MBR in Rufus in the “partition scheme” options? After all, I understand correctly that MBR does not work on ufi?

Perhaps because the image is like this, without UEFI boot support.

Hello Dmitry. This is my situation. The disks are gpt-marked. Bootable USB flash drive Ventoy. Everything worked well before. But then there was a failure. PC freezes, ctrlaltdel went to reboot. For some reason, the BIOS reset the settings to factory defaults. After that, when choosing an image (any), I get an error no boot file found for uefi. Maybe the image does not support x64 uefi. What to do? Can you advise something? The system does not boot any. Neither Windows nor Linux. Stand on different disks.

Hello Secure Boot, can it turn on? But this is just a guess (and in this case, in theory, he should behave differently)

The article helped launch the installation! thank

Hello Dmitry. Question. How can this be fixed?
(disk volume table)
Why volume 3 is System and visible, and C: bootable with Windows?
As I understood it is not correct.

No, everything is ok, this is standard in your configuration. the FAT32 volume with the bootloader is indicated in the list volume as the system volume, and the volume from the OS itself, from where it is loaded, as bootable.

Hello again. As it turned out, I got UEFI. I downloaded Easy UEFI from the Internet, before that I changed the GPT markup to MBR and managed to install Windows 10, during installation I partitioned the disk 512 mb, 1024 mb and for the 120 Gb system. Then I launched Easy Trial UEFI, the efi bootloader was created (in a volume of 1024 MB.) But this section turned out to be not hidden. Then in iomi I changed MBR to GPT in BIOS changed everything to UEFI Windows10 starts. But I can’t install anything else.
When I try to install Arcolinux, I get this error.
Falling back to interactive prompt
You can try to fix the problem manually, log out when you are finished sh: can`t access tty: job control turned off
On google it has something to do with the uefi downloader
Tried to do like this
sel disk 0
sel patition 2
assign letter = b
cd / d b: \ efi \ microsoft \ boot \
bootrec / fixboot
Then I get an error: “bootrec” is not internal or external
command, executable program, or batch file.
In general, I’m collecting bits and pieces of how to solve this. I think that the matter is in / efi / boot. Somehow you need to reconfigure it. Do not know how. Can you help?

I have no answer for the installation, Linux is not quite my specifics. The only thing, I went to Google on the topic now and did not see that it is connected with the UEFI bootloader in the discussions, rather with the inaccessibility of some sections.
And why bootrec does not work for you is also not clear. Windows original?

Yes, Windows from the site’s office. I activate it in my account.

Hello! An Asus laptop has a BIOS, but a hard drive with GPT partitions. The BIOS does not see a bootable USB flash drive with the MBR (NTFS) format at all. He sees a USB flash drive in GPT format (FAT32), but at the same time, when you select it via Boot, the already installed Windows is simply loaded. And in BIOS, the flash drive is simply called Mass Storage, although when I created it through Rufus I called it Windows.

Apparently, you have enabled boot in UEFI mode on the laptop (the fact that the BIOS interface looks “standard” does not mean that the laptop does not have UEFI). If you burned a USB flash drive under BIOS (MBR), then you will not be able to boot from it until you enable Legacy boot in BIOS. If you recorded using FAT32 / GPT and still does not boot, you may need to disable Secure Boot.

Thank you very much! I struggled for 2 hours (Asus VivoBook 15 X512FJ-BQ475), the BIOS did not see the bootable USB flash drive until it found your instructions. 1) disabled Secure Boot Control 2) disabled Fast Boot 3) enabled USB (I don’t remember where exactly, now I’m not in front of my eyes) 4) saved and rebooted with an inserted USB flash drive with a Windows-10 image from offsite / when formatting and loading the image, I used the GPT option. for computers with UEFI (EFI boot) When you press ESC, a choice of loading from a USB flash drive appeared in the menu, then everything is normal.

Hello, can you tell me what it means to activate USB and where to do it? I have been fiddling with the BIOS for too long, it seems that it just does not read a flash drive and any external media.

Good afternoon, please tell me what to do. Faced such a situation when the “secure boot” and “fast boot” functions are disabled in the BIOS, but the “Legacy CSM” function does not appear anywhere. As it became clear, I want to install the system on a new laptop with FreeDos. Since CSM will not be able to turn it on, I decided to saddle a bootable USB flash drive through Rufus with a GPT UEFI (non-CSM) partition, but to my regret, the BIOS did not see the bootable USB flash drive. And now I have no idea how to install at least some kind of system on it

Hello. Here I would like to see how your BIOS interface looks like. One way or another, the desired item must be somewhere. Sometimes it still looks like an OS choice (between Windows and Other OS, where the first is UEFI, the second is Legacy).

BIOS is from ASUS, the latter is on their website (version 304). There is no OS choice in it, as well as the Legacy mode. I accidentally noticed that this BIOS reads only flash drives with FAT format (not FAT32), when I decided to flash the BIOS just in case, despite the fact that I was going to flash the same one, because it was the last one, so I took the old flash drive where it was saved FAT format. Reflashing naturally did not help. And since 10 Windows weighs more than 2 GB, it will not be corny to be seen on a USB flash drive with FAT format, so I have no idea what to do.

There are two options:
1. Leave it as it is (that is, without converting the disk, we cannot return the UEFI boot already, perhaps where you read about it, you just misunderstood something).
2. Convert disc. This can now be done without losing the installed Windows 10, like this:

Hello! In the boot menu, my flash drive is visible, when I click on it, it just starts the previously installed Windows 7. And nothing else happens. I want to install Windows 8.1. Downloaded from the official site Windows 8.1 for one language. I have an HP laptop, legacy support is enabled, secure boot is disabled, in the legacy boot order the flash drive is in the first place. What to do?

According to your description, everything should boot properly from the USB flash drive, or the message “Press any key to boot from CD / DVD” should appear and by pressing any key, the installation from the USB flash drive should be started.
How exactly did you record the bootable USB flash drive? And it happens that some just throw the ISO file on it (and so it will not load).

Win7 in UEFI mode simply won’t install. No way. Various installers, assemblies, rufuses, multiboots. I tried everything in two days. Win7 is not installed in UEFI mode. Paradox. Hangs on the inscription “Starting Windows”.
In CSM mode, the flash drive is not visible.
With what it can be connected

Have you tried another drive? And on the USB 2.0 connector

asus vivobook x540n did not see the bootable USB flash drive, but after dancing with a tambourine, I saw it recorded in GPT, but when I clicked on the USB flash drive in the boot menu, it quickly throws it into the BIOS.

Hello. Samsung laptop np300e5c. Doesn’t see the flash drive at all. Working connector, flash drive too. Recorded via Rufus in the ICBM

Hello. NTFS? Which boot device do you choose in BIOS?

Hello, I can not start the Windows installer from a USB flash drive, (I wrote it down for UEFI), UEFI did everything right for me, disabled the secure boot, just the gigabyte logo and that’s it

And in the BIOS, is the UEFI boot mode set? (that is, on motherboards with UEFI, Legacy may be loaded).
We tried to connect a USB flash drive to another USB connector, it is better to try 2.0

Hello Dmitry!
I could not run the installation flash drive on a laptop (ACER Aspire), but I used the flash drive on other computers.

Well, I seem to have described the possible reasons above: either the boot mode is not the one selected in the BIOS (Legacy instead of UEFI or vice versa), or Secure Boot is enabled. precisely, I will not answer, since there is not enough information in the question.

Greetings, I have an acer predator helios 300 ph317-52, the flash drive does not see how, and in boot, which in the BIOS and in the boot menu, which is called separately, cannot be translated into legacy either, because in boot mode there is only the uefi item what to do, tell me?

Is the flash drive exactly made for UEFI? Because according to the description it looks like no. Well, try to disable Secure Boot.

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Hello! I have a 2008 ASUS laptop with Windows Vista Home installed. Recently, it began to reboot endlessly (due to a blackout), I decided to create a bootable USB flash drive with a system image (I did it through Rufus (MBR mode) and UltraIso (USB-HDD mode)) and restore the system. But the laptop does not see the USB flash drive, the system boots immediately, then reboots. In BIOS, I have the first boot queue set. Removable Device. I decided to remove all boot options in the BIOS (leave only the USB flash drive). after the reboot, the message “Insert the boot disk” appeared.
I checked the composition of the ISO image and what was written on the USB flash drive. the composition of the files is the same.
Why the laptop does not see the USB flash drive?
Thanks in advance for your reply.

It’s so hard to guess. And if you do not set the boot order, but call the Boot Menu (usually the required key is indicated on the first screen below). is there a flash drive in the list? What happens when you choose it?

Hello! I installed 8.1, a month ago I activated it using KMS Auto Net, everything seems to be fine, but I don’t remember exactly after what, but after a month the laptop began to reboot for about 20-30 minutes, attempts to put something in the BIOS, they didn’t give anything, I downloaded the ISO 8.1 image via UltraIso, try to reinstall it, there is no flash drive in the BIOS, I just did not do it, I inserted the USB flash drive into the laptop, opened the device, there are 7-8 files, I press Setup and run on behalf of Adm. and the installation of Windows 8.1 went. How can I understand?

Perhaps the USB flash drive was recorded for the wrong type of boot. Although, on the other hand, through UltraISO it should be suitable for both Legacy and UEFI (although it may still depend on the specific image). Or maybe something was wrong in the BIOS (but you can’t tell without seeing the picture).
Well, the fact that after the setup the installation went. this is normal, it is for this purpose that you need to start the installation in an already running system.

thank you very much for answering, good site.

BIOS does not see the USB flash drive

Removable media in the form of flash memory, SD-, microSD-cards are used not only to transfer data, but also to install an operating system. Windows, Linux or any other. Such installation flash drives have long replaced optical disks: after the OS installation is completed, they, unlike CD / DVDs, can be easily erased to record new information or the next version of the operating system. Ideally, a computer or laptop should automatically detect such media. at the BIOS level. What to do if the BIOS does not see the bootable USB flash drive, we will tell you in this article. Still have questions? Get help from the Good Deeds Service!

The second reason. Wrong priorities

In the BIOS menu, before starting the OS installation from an external drive, you must set the order of accessing the media. otherwise, a flash drive, even a recognized one, can be ignored. To go to the menu and make sure that the BIOS does not see the USB flash drive for another reason, follow the instructions:

  • Turn off your PC or laptop.
  • Connect external storage.
  • When you turn it on again, press, until the operating system window appears, on the key set by the manufacturer to enter the BIOS: Delete, F2, F8, F12. Other keys or keyboard shortcuts are possible.
  • Use the “arrows” to go to the Boot tab.
  • Highlight the 1st Boot Device item and, pressing Enter, define your flash memory as the first priority drive.
  • Press F10 to exit with the corrections made. The computer will automatically reboot. and when it is turned on again, it will detect the bootable drive.

Depending on the manufacturer and version of the menu, the names of the tabs may differ. so as not to be mistaken, be guided by the word Boot.

The first reason. Incorrect information on the flash drive

The BIOS may be unable to detect the bootable media because a failure occurred during writing or the data does not comply with the BIOS / UEFI standard. Why does this happen? There are several answers:

  • You removed the drive without completing the write process to its logical end.
  • You did not use a special program for writing, but simply copied the data from the directory. maybe even without unzipping.
  • You are using an “author” assembly with critical errors.

In this case, the BIOS does not see the USB flash drive in the Boot Menu exactly as bootable media. but it is displayed as a regular flash memory.

To avoid errors in identifying the drive, use special applications for writing. for example, Rufus or WinSetupFromUSB. and be sure to complete the recording process without removing the media until a notification appears that the data has been successfully copied.

The third reason. USB port problems

The settings performed in the menu will only help if the flash drive is recognized by the BIOS. at least as a regular data carrier. If the USB flash drive is not displayed at all in the BIOS, the matter is almost certainly in the USB connector. Perhaps it is not designed for the USB 3.0 protocol. you can recognize it by the blue colored board. In this case, overwrite the boot data to a USB 2.0 flash drive and try again.

The second option is a port breakdown. Try plugging the drive into any other free slot. Has the process started? So the problem is solved. Nothing happened? Then it remains to write the installation files to another drive. an optical or non-system hard drive.

If the USB flash drive is not detected in the BIOS, do not forget to start checking with the health of the media itself. Still have questions? Call or write to the “Good Deeds Service”. we will conduct a remote consultation and help you troubleshoot!

BIOS does not see the bootable USB flash drive, what to do?

Do you know what is the most common question among users who first decided to install Windows from a USB flash drive?

They constantly ask why the BIOS does not see the bootable USB flash drive. To which I usually answer, but is it bootable?

In this short note, I would like to dwell on the main issues that you need to go through if you have a similar problem

Is the bootable USB drive written correctly??

The most common is that the flash drive is not written correctly.

Most often, users simply copy files from a disk to a USB flash drive And by the way, some people say that it works for them. Perhaps, but this is not worth doing, especially since this option will not work for the majority

It is best to use a special program for writing a bootable USB flash drive. In one of the articles, we have already gone through the most popular utilities in detail.

Personally, I like to use the Ultra ISO program most of all: it can be used at least Windows 7, at least Windows 8 can be written to a USB flash drive or external hard drive. In addition, for example, the recommended utility “Windows 7 USB / DVD Download Toll” allows you to write an image only to an 8 GB flash drive (at least for me), but UltraISO can easily write an image to 4 GB!

1) Download or create an ISO image of the OS you want to install. Then open this image in UltraISO (you can press the “CntrlO” button combination).

2) Next, insert the USB flash drive and select the function of recording the hard disk image.

3) A settings window should appear. There are several important issues to note here:

Then click on the recording function.

4) Important! When writing, all data on the flash drive will be deleted! What, by the way, the program will warn you about.

After the message about the successful writing of the bootable USB flash drive, you can proceed to BIOS setup.

Is the BIOS configured correctly, is there a function to support a bootable USB flash drive?

If the USB flash drive is recorded correctly (for example, as described a little higher in the previous step), most likely you simply configured the BIOS incorrectly. over, in some BIOS versions, there are several boot options: USB-CD-Rom, USB FDD, USB HDD, etc.

1) To begin with, we restart the computer (laptop) and go into the BIOS: you can press the F2 or DEL button (look carefully at the welcome screen, there you can always see a button to enter the settings).

2) Go to the download section. In different versions of Bios, it can be called slightly differently, but the presence of the word “BOOT” is invariably there. Most of all we are interested in the priority of loading: i.e. turn.

Below in the screenshot is my boot section on an Acer laptop.

It is important here that in the first place is the boot from the hard disk, which means that the queue simply will not reach the second line of the USB HDD. You need to make sure that the second line of the USB HDD becomes the first: on the right in the menu there are buttons with which you can easily move the lines and build the download queue as you need.

ACER laptop. Configuring the boot partition. BOOT.

After the settings, it should look like the screenshot below. By the way, if you insert a USB flash drive before turning on the computer, and after switching on, go into the BIOS, then you will see opposite the USB HDD line. the name of the flash drive and you will easily find out which line you need to raise to the first place!

Remember to save all the settings you made when exiting the BIOS. Typically, this option is called “Save and Exit”.

By the way, after the reboot, if the flash drive is inserted into USB, the OS installation will start. If this did not happen. for sure, your OS image was not of high quality, and even if you burn it to disk. you still cannot start the installation

Important! If your BIOS version does not, in principle, have an option to select USB, then most likely it does not support booting from flash drives. There are two options: the first is to try to update the BIOS (this operation is often called firmware); the second is to install Windows from disk.

Perhaps the flash drive is simply damaged and therefore cannot be seen by the PC. Before throwing out a non-working flash drive, I recommend that you familiarize yourself with the instructions for restoring flash drives, perhaps it will serve you faithfully

Configuring BIOS to boot from a USB drive

Let’s look at an example of booting a UEFI BIOS from a USB drive. For example, we will use MSI motherboard. A58M-E33, which has the latest UEFI BIOS. To enter the UEFI BIOS settings of the A58M-E33 motherboard, you need to press the F11 key when starting your laptop or desktop computer. A boot menu will open in front of you, in which you need to select a flash drive, in this case it is “KingstonDataTraveler 2.0PMAP”.

You can also set in the options so that the flash drive is loaded immediately from the BIOS. To do this, press the Delete key while loading. You will be taken to the UEFI BIOS main menu.

Then go to the “Settings \ download” menu and put the flash drive in the first place, as shown in the figure below.

Your system will now boot from the selected flash device. But if your PC or laptop has UEFI and the system does not see the bootable USB flash drive, then the image is incorrectly recorded, or the “Safe boot” mode is enabled (for how to fix, see the section below “How to configure UEFI so that”).

Correctly creating a bootable USB stick for Ubuntu 15

For Ubuntu 15, you need to download the UNetbootin utility from After starting the program, you must select the options as in the figure below and click the OK button.

After that, downloading and writing files to the bootable flash drive will begin, in this case, this is drive D.

In the final window, you will be prompted to restart your computer or laptop and boot from the USB flash drive.

Booting from a USB stick on older computers

On older BIOS versions, it is also possible to boot from a USB stick. For example, to boot from an old Acer laptop, you must press the F2 key at startup. Once in the BIOS of the Acer laptop, go to the “BOOT” menu.

Next, go to “Boot Device Priority” and put your boot device in the first place.

Now after saving, your Acer laptop will boot from the flash device. This old BIOS configuration is installed on most Acer notebooks. Therefore, with other legacy Acer notebook models, the setup will be similar.

If the BIOS does not see the bootable USB flash drive how to install

Flash drives have now become an indispensable tool for storing and transferring information to a PC. Most personal computer users use flash drives to install Windows or Ubuntu. This is due to the fact that you do not need to write the image to disk, but you need to install directly from a USB flash drive.

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In addition, most laptop and computer manufacturers, such as Acer and Lenovo, are now making desktops and laptops without optical drives, further popularizing installing Windows from a bootable USB stick. When installed in this way, many laptop and desktop users have situations where the BIOS does not see the bootable USB flash drive. In this article, we will try in detail to figure out how to write an image to a USB flash drive, as well as deal with BIOS settings for the correct installation of Windows and Ubuntu.

If you are faced with the fact that when you restart your PC, your flash drive is not detected, then the first step is to make sure that the flash drive is really bootable. The fact is that just copying files to it is not enough.

over, if you have an “absolutely working” bootable flash drive, since you have already installed the system from it many times, then we have to disappoint you: currently there are several types of boot systems and a flash drive running on one PC will not work on another. For success in this case, the system must be rewritten in a different way.

Therefore, the main part of the article contains detailed instructions on how to properly write a bootable USB flash drive using various software. The following article contains recommendations for configuring different types of BIOS.

Correct creation of a bootable USB flash drive for Windows

  • Windows 7;
  • Windows 8.1;
  • Windows 10;
  • Ubuntu 15.

To create a bootable USB flash drive for Windows 7, you need to download a licensed image. You can download it on the official page To write an image to a USB flash drive, you will need a proprietary Microsoft Windows USB / DVD Download Tool, which can be downloaded at After installing the utility, you can start creating a bootable USB flash drive. After launching the utility, a window will appear in which you must specify where the image is located.

After clicking Next. you will be taken to the device selection window for recording an image.

In this window, you must click the USB device button. after which you will go to the choice of the flash drive.

After selecting the required flash drive, click the Begin copying button. The process of copying the installation files to the USB flash drive will begin. Also, be careful, as all previously stored files on the USB drive will be erased.

The inscription in the last window “Status: Backup completed” will mean that your bootable flash drive is ready.

To install Windows 8.1, you need to download the official MediaCreationTool utility at After launching the utility, you will be taken to the OS version selection window, in which you need to select the language, version and bitness of the operating system.

In the next step, you need to select a Windows recording device. In our case, this is a “USB flash drive”

The next step will give you the opportunity to choose a USB flash drive.

After that, the next step will be to download and write files to the drive. As with the previous example, all data on the flash drive will be erased.

The last window will notify you that the installation media is ready.

To make a bootable flash drive for Windows 10, you need to download the MediaCreationTool utility from this page: If you run the utility on Windows 7 or 8, the program will offer you two options: update or create installation media. You need to choose the second option.

The step of creating a bootable drive will be similar to the example for Windows 8.1.

USB drive for UEFI computer

If you buy a new computer or laptop now, it will definitely support UEFI BIOS. There are many benefits to using the new UEFI BIOS, so the bootable flash drive must be UEFI capable.

If you create a bootable USB drive for Windows 7, 8.1 using MediaCreationTool, the UEFI system will support it. And with the Windows USB / DVD Download Tool for Windows 7, this option will not work.

Let’s consider the option of creating an installation flash drive with support for UEFI systems for Windows 7. To do this, download the Rufus program at Please insert the USB stick before starting the program. After launching the Rufus utility, select the Windows 7 image. You can do this by clicking on the DVD disc icon. The program window will look like this.

If you have all the items that match, as shown in the figure, then feel free to press the Start button. after which the recording of files will begin.

laptop, does, bootable, flash, drive, bios

After the files have been written, you can use the flash drive to install Windows on a UEFI system. Rufus can also be used for systems with a regular BIOS. A notable feature of the Rufus program is the fast speed of writing the image to the drive.

After reading this material, you can create bootable USB drives for Windows and Linux-like operating systems. And you will not have questions such as why the BIOS does not have my flash drive or why Windows does not support the UEFI system.

How to configure UEFI so that the computer sees a bootable USB flash drive

There are some peculiarities of installing Windows 7 or XP on PCs with Windows 8 or 10. The latest versions (8 and 10) are configured for UEFI and GPT partition table, while the previous ones used MBR disk partition.

UEFI introduces a new “Safe boot” feature to ensure system boot security. New level of security blocks booting from external devices such as USB stick and CD drive.

Therefore, even if you make an exceptionally correct bootable USB flash drive, it will still not appear in the boot menu when you reboot your PC or laptop.

To eliminate this cause, you can do the following:

  • Make sure that your USB bootable flash drive is configured to work with UEFI (how to make such a USB flash drive correctly. described above).
  • Disable “Safe boot”, and change “Boot Mode” to “CSM / Legacy BIOS Mode”.

Working with bootloader settings requires some experience, we do not advise beginners to perform such actions. We also recommend that you save all important data in advance, as they may be lost.

To disable Safe boot, follow these steps:

  • Restart your computer or laptop and enter BIOS.
  • Go to the “BIOS Settings” page.
  • In the BIOS security settings, set the “Safe boot” option to “Disable”.
  • Change the “Boot Mode” option to “CSM (Compability Support Mode) / Legacy BIOS” or “CSM Boot”. different possible options.
  • Make sure USB is the first in the “Boot Order” boot sequence settings.
  • Exit BIOS with saving changes “Save and exit”.

AMI BIOS setup

The key combinations for entering the AMI BIOS are the same as for the Award BIOS.

If you have an AMI BIOS, follow these simple steps:

    Go to BIOS and find the “Advanced” sector.

  • Switch to it. Select the “USB Configuration” section.
  • Set the “USB Function” and “USB 2.0 Controller” switches to the “Enabled” position.
  • Go to the “Boot” tab and select the “Hard Disk Drives” section.

    Move the item “Patriot Memory” to its place (“1st Drive”).

    The result of your actions in this section should look like this.

    In the “Boot” section, go to “Boot Device Priority” and check. “1st Boot Device” should exactly match the result that was obtained in the previous step.

    If everything is done correctly, go to the “Exit” tab. Press “F10” and in the window that appears. enter.

  • The computer will reboot and start a new session by launching from your flash drive.
  • Flash drive with Windows 7 installer

    • First of all, go to the Microsoft website and download the utility from there to create a bootable flash drive.
    • Install it and start making a flash drive.
    • Using the “Browse” button, which will open the explorer, specify the location where the ISO image of the OS is located. Click on “Next” and proceed to the next step.

    In the window with the choice of the type of installation media, specify “USB device”.

    Next, the process of creating a drive will begin.

  • Close the window in the usual way and proceed with the installation of the system from the newly created media.
  • Try using a bootable drive.
  • This method is suitable for Windows 7 and later. To write images of other systems, use our instructions for creating bootable USB drives.

    In the following instructions, you can see ways to create the same drive, but not with Windows, but with other operating systems.

    BIOS does not see the bootable USB flash drive: how to fix

    In general, there is nothing better for installing the OS on your computer than a self-made bootable USB flash drive. You will be 100% sure of it. In some cases, it turns out that the media itself is made incorrectly. Therefore, we will look at several ways how to make it for the most popular versions of Windows.

    In addition, you need to set the correct parameters in the BIOS itself. Sometimes this may be the reason for the absence of a drive in the list of drives. Therefore, after we figure out how to create a flash drive, we will consider three more ways to configure the most common BIOS versions.

    Award BIOS setup

    To enter Award BIOS, press F8 while the operating system boots. This is the most common option. There are also the following entry combinations:

    • CtrlAltEsc;
    • CtrlAltDel;
    • F1;
    • F2;
    • F10;
    • Delete;
    • Reset (for Dell computers);
    • CtrlAltF11;
    • Insert.

    Now let’s talk about how to properly configure the BIOS. In most cases, this is exactly the problem. If you have an Award BIOS, do this:

    • Go to BIOS.
    • From the main menu, use the arrows on the keyboard to go to the “Integrated Peripherals” section.

    Check that the switches of the USB controllers are in the “Enabled” position, if necessary, switch it yourself.

    Go to the “Advanced” section from the main page and find the item “Hard Disk Boot Priority”. It looks like the one shown in the photo below. Pressing “” on the keyboard, move to the very top “USB-HDD”.

    As a result, everything should look as shown in the photo below.

    Switch back to the main window of the “Advanced” section and set the “First Boot Device” switch to “USB-HDD”.

    Return to the main window of your BIOS settings and press “F10”. Confirm the selection with the “Y” key on the keyboard.

  • Now, after restarting, your computer will start installing from the USB stick.
  • What to do if the BIOS does not see the bootable USB flash drive

    Modern laptops are getting rid of CD / DVD drives one by one, becoming thinner and lighter. Along with this, users have a new need. the ability to install the OS from a flash drive. However, even with a bootable USB stick, not everything can go as smoothly as we would like. Microsoft specialists have always liked to throw interesting puzzles for their users. One of them is that the BIOS may simply not see the media. The problem can be solved with several sequential actions, which we will now describe.

    UEFI setup

    Logging into UEFI is the same as entering BIOS.

    This advanced version of BIOS has a graphical interface and can be operated with the mouse. To set the boot from removable media there, follow a series of simple steps, namely:

      On the main window, immediately select the “Settings” section.

    In the selected section with the mouse, set the “Boot Option # 1” parameter so that it shows the USB flash drive.

  • Go out, reboot and install the OS you like.
  • Now, armed with a properly made bootable flash drive and knowledge of BIOS settings, you can avoid unnecessary worries when installing a new operating system.