UEFI does not recognize USB Boot drive

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  1. Posts : 6
    Windows 10
       #1

    UEFI does not recognize USB Boot drive


    Hi. I am trying to re-install Windows 10 (Version not sure) from USB flash drive on Lenovo Ideapad 100s. The boot drive was configured with MS Media Creation Tool. I can enter UEFI/BIOS with the Novu button in the Boot Option Menu but the flash drive is not recognized under EFI Boot Devices sub menu. I have disabled Secure Boot in the Setup menu as suggested on another website but to no avail. When I select EFI USB Device sub menu under the Boot Option Menu the boot drive is accessed and installation commences to the first screen but as soon as the installation starts the keyboard is disabled. I have tried using a USB keyboard - no success.
    BitLocker locked my notebook and I can't locate the key ....... looked evrywhere.....I think.
    Any suggestion would be appreciated.
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  2. Samuria's Avatar
    Posts : 6,195
    windows 10
       #2

    Have you got the latest version from https://www.microsoft.com/en-gb/soft...load/windows10 free. download and let windows create the usb a lot have problems download the iso and trying to get it on usb by other software the usb should have uefi folder when done you have set in the bios to boot usb or it wont boot ?
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  3. Posts : 6
    Windows 10
    Thread Starter
       #3

    Hi Samuyria. Yes I have downloaded from there and created the boot drive with this tool. The BIOS on this machine does not have the option to select boot from usb..only Secure Boot enable or disable.
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  4. Samuria's Avatar
    Posts : 6,195
    windows 10
       #4

    All most all pcs have an option in the BIOS boot menu to boot USB but you need the USB plugged in before you turn it on or it won't show
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  5. Posts : 6
    Windows 10
    Thread Starter
       #5

    Under setup there is no option to select USB Boot. But under the Novu menu one find two options a) Boot Devices (which should list the USB devices plugged in and b) USB Devices which if selected start installing Windows but stop at the first screen due to the fact that the keyboard is then disabled and one can not do any selections to carry on with the installation.
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  6. Berton's Avatar
    Posts : 11,032
    Win10 Pro Versions 2004 and 2009/20H2, Win10 Pro IP_Dev, Win10 Home 1909
       #6

    In addition to disabling the Secure Boot and Fast Start in a BIOS it usually helps to set the USB to Legacy. Most BIOSes have support for USB 2 ports and devices in them but not for USB 3 which needs the OS loading their drivers, an exception would be the newer combination ports that support both USB 2 and USB 3. I have a 13" Notebook with only 2 ports and both have SS with the 'trident' logo that signifies USB 3 capability.

    I use the MCT to create a more-current USB drive now and then, it automatically deletes the partition on it, creates a new partition, formats as FAT32 and then installs what is needed. I use an 8GB for the single format of 32-bit or 64-bit or a 16GB for the combination of both formats. The FAT32 format with Windows has a maximum size limit of 32GB.
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  7. sygnus21's Avatar
    Posts : 5,529
    Win 10 Pro (x64) 21H1 (19043.1023
       #7

    Scopes said:
    BitLocker locked my notebook and I can't locate the key ....... looked evrywhere.....I think.
    Any suggestion would be appreciated.
    If you log into Windows with a Microsoft Account it may be stored in your account since that's the default save option. It's also where I chose to keep mine for safe keeping.

    Finding your BitLocker recovery key in Windows 10 - if you use the link within the article, it will take you directly to the section where the keys are stored; otherwise you have to hunt for them - From Account home page, click "Devices" chose the PC or which you need to key (if you have more than one PC using a Microsoft account). Click the "Manage" drop down box, click "Get BitLocker recovery keys"

    As for USB and UEFI, if you created the USB drive using the Media Creation Tool (as I do) you don't need to disable Fast Start or Secure Boot (I don't).

    I simply chose UEFI install from the USB drive and it works without issue. At least that's how its worked for me with my Gigabyte boards.
    Last edited by sygnus21; 02 May 2021 at 16:49.
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  8. Posts : 6
    Windows 10
    Thread Starter
       #8

    Hi Berton, Sygnus. Thank you for the input. I have created the USB drive with the latest MCT on a 16GB flash drive. I have looked everywhere for my BL key...not in MS accounts. Was not so clever not to save it somewhere else as well. My problem now is the keyboard gets disabled as soon as the installation from the boot drive starts......when I power up the keyboard indicator lights up and stays on till the installation starts.
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  9. sygnus21's Avatar
    Posts : 5,529
    Win 10 Pro (x64) 21H1 (19043.1023
       #9

    Scopes said:
    I have looked everywhere for my BL key...not in MS accounts. Was not so clever not to save it somewhere else as well.
    Not sure what that means? Have you checked the account or not???

    And if you encrypted the drive you "had" to choose a save location in order to proceed with the encryption process, even it you chose to save in your MS account. Your problem is you don't know where you put it. And the key wouldn't be on the encrypted drive because BitLocker doesn't allow you to say the to the drive being encrypted.

    But yes, you can't access the drive without a unlocking it. And you can't unlock without a Key. With that, and without a key, the only way to access the drive is to wipe it and all the contents with it. Remember the purpose of an encrypted drive is to secure the contents from unauthorized users.

    Scopes said:
    My problem now is the keyboard gets disabled as soon as the installation from the boot drive starts......when I power up the keyboard indicator lights up and stays on till the installation starts.
    Go into the BIOS and make sure Legacy USB is enabled. If the issue persists, you may have to find or borrow a PS2 keyboard (provided the motherboard supports PS2 ports) or USB to PS2 adapter.
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  10. Posts : 6
    Windows 10
    Thread Starter
       #10

    Hi Berton, Sygnus. Thank you for the input. I have created the USB drive with the latest MCT on a 16GB flash drive. I have looked everywhere for my BL key...not in MS accounts. Was not so clever not to save it somewhere else as well. My problem now is the keyboard gets disabled as soon as the installation from the boot drive starts......when I power up the keyboard indicator lights up and stays on till the installation starts.

    - - - Updated - - -

    Oops! Don't know what happened here....sorry! MS= Microsoft account nothing there. Unfortunately this notebook does not have PS2 port. This BIOS (or UEFI?) does not have a Legacy BIOS feature ...perhaps its named something else? Its very basic. Only under the Novu menu two references are made to USB and Boot. According to Lenovo the Boot flash drive should appear under EFI Boot Devices sub menu where you can select it to start the installation.....but it is not there. When I select the EFI USB Device menu the installation starts immediately and the keyboard is disabled.
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