Windows 10: USB Flash Drive UEFI problem Solved

  1.    16 Dec 2015 #1

    USB Flash Drive UEFI problem


    Hello Tenforums.com

    No matter what I do, my Lenovo Flex 2-14 doesn't seem to recognise my USB as an UEFI Windows bootable flash device, despite following this guide https://www.tenforums.com/tutorials/2...dows-10-a.html (Option 2), step by step.

    I am using a Verbatim 16GB USD v3.0 with Windows 10.10586 x64 on it, and I tried from all three USB-slots on the laptop.


    BIOS configuration is as following:

    Configuration:
    Wireless LAN: Enabled
    SATA Controller working mode: AHCI
    Hotkey Switch: Hotkey Mode
    Power Beep: Disabled
    AMD Virtual Technology: Enabled
    BIOS Bach Flash: Disabled

    Security:
    Adiminstrator password: Cleared
    User Passord: Cleared
    HDD Password: Cleared
    Secure Boot: Disabled

    Boot:
    Boot Mode: UEFI
    USV Boot: Enabled
    PXE Boot to LAN: Enabled
    Boot Priority Order: 1. USB HDD (..) 2. USB FDD (..) 3. ATA HDD: WDC WD200LPCX (..)

    Exit:
    OS Optimized Defaults: [Win 8 64bit]


    The Boot Menu offers these options:

    1. USB HDD: Verbatim STORE N GO
    2. ATA HDD: WDC DW500LPCX
    3. PCI LAN: EFI Network (IPv4)
    4. Windows Boot Manager
    5. PCI LAN: EFI Network (IPv6)


    My pre-installed Windows 8.1 crashed and is not accessible in any way. I spent days now trying all kind of options back and forth, but I believe the above setup should be the right one.

    Shouldn't option 1 of Boot Menu appear as something like "1. UEFI HDD: Verbatim STORE N GO"?

    Anyone got an idea what is the problem here?
      My ComputerSystem Spec

  2.    16 Dec 2015 #2

    Hi, Panasonic. First thought is - can you confirm you selected FAT32 for the USB format in Rufus?
      My ComputerSystem Spec

  3.    16 Dec 2015 #3

    Hi Word Man,

    Yes I can confirm I selected FAT32.

    This is what Rufus looked like prior to pressing 'Start':

    Click image for larger version. 

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      My ComputerSystem Spec

  4.    16 Dec 2015 #4

    This is what properties of the USB shows:

    Click image for larger version. 

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    Last edited by Panasonic; 16 Dec 2015 at 11:40. Reason: Checked wrong USB device
      My ComputerSystem Spec

  5.    16 Dec 2015 #5

    Judging from this info:
    Installing linux via usb with uefi on lenovo flex ... - Lenovo Community

    It looks like the Flex will only boot a flash drive in legacy mode.
      My ComputerSystem Spec

  6.    16 Dec 2015 #6

    NavyLCDR said: View Post
    Judging from this info:
    Installing linux via usb with uefi on lenovo flex ... - Lenovo Community

    It looks like the Flex will only boot a flash drive in legacy mode.
    Thanks for bringing to my attention that thread over at Lenovo forum. It might seem to be some issues regarding Lenovo Flex and UEFI. I will have a deeper look within a few days and post here how the situation developes.
      My ComputerSystem Spec

  7.    16 Dec 2015 #7

    My wife's Acer never lists the thumb drive with the UEFI connotation, but does install in UEFI mode. I use diskpart, option 2 here, http://www.eightforums.com/tutorials...e-windows.html Done that way I can install in UEFI or legacy with that same thumb drive. I have 2 laptops with UEFI and 2 desktop PC's that are legacy BIOS.
      My ComputerSystem Spec

  •    04 Jan 2016 #8

    There was a hardware problem with my computer.

    Thanks guy for taking your time to look into this post!
      My ComputerSystem Spec


  • Posts : 1
    Microsoft Windows 10
       12 May 2016 #9

    Panasonic said: View Post
    There was a hardware problem with my computer.

    Thanks guy for taking your time to look into this post!
    Could you please elaborate how you came to the conclusion that your hardware caused this malfunction?
    And please, what hardware and in which sense? A hint to your solution would be great :)

    My current setup is exactly the same and I cannot get Win8 nor Win10 to boot from a USB stick. I Used two sticks, but both fail to boot these. Out of curiosity I tried a stick with Win7 on it and it (kind of) worked. It boots to the installation screen, but then failes due to lacking driver support from Win7 (an error message appears) .
      My ComputerSystem Spec


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