View original (French)

USB key not recognized in UEFI mode

Asilaletup -  
gugu01 Posted messages 15669 Registration date   Status Contributor Last intervention   -
Hello everyone, I'm trying to install Windows 10 on an Acer Nitro 5 running Linux. Everything was going well until Windows asked me which partition I want to install it on. Indeed, they are all in "gpt" and Windows doesn't want to install on them even if I format them... So I looked on several forums for a solution, and I finally found that I needed to set the boot to UEFI mode instead of the Legacy mode that I had set, but my problem is that my bootable USB drive (with Windows) is not recognized by my PC when I'm in UEFI mode. I don't know what to do.
Thank you in advance for your help.

5 answers

  1.
    Bob36180 Posted messages 335 Status Member 17
     
    Hi,

    Wait, let's not get carried away with complicated methods... the Rufus program, which is freeware for Windows, sets up ISOs in GPT mode for UEFI! So you need to remake the bootable USB key using Rufus and in this mode...
    Warning: This mode does not appear under Windows XP.
    7
    1. gugu01 Posted messages 15669 Registration date   Status Contributor Last intervention   4 702
       
      His key might not be in the correct format, it wouldn't start with it...
      0
    2. Bob36180 Posted messages 335 Status Member 17
       
      Yes, because his partitions are in GPT and the ISO will be too with this mode of Rufus; he will have to choose the UEFI boot option from his USB drive at reboot and that's it!!
      0
  2. gugu01 Posted messages 15669 Registration date   Status Contributor Last intervention   4 702
     
    Bob36180
    I was going to say no, but after rereading everything, it’s true that his installation key is the issue.
    I didn’t pay attention to the fact that he was working in legacy mode.
    Proof that his key is poorly made.

    -----------------------------

    Asilaletup

    I hadn’t noticed, you said:

    "it was necessary to set the boot to UEFI mode instead of Legacy mode which I had set, but my problem is that my bootable USB (with Windows) is not recognized by my PC when I am in UEFI mode"

    No legacy, W 10 is a key that boots in UEFI with a GPT partition type for UEFI.

    Any tutorial you might have found saying that you need to set legacy mode to install Windows 10 is false and dated several years back.
    ---------------------------------------

    Redo your installation key with this software:
    https://download.microsoft.com/download/c/0/b/c0b2b254-54f1-42de-bfe5-82effe499ee0/MediaCreationTool1909.exe
    It downloads the ISO and creates the key correctly (create media for another PC and follow the instructions)

    Set your BIOS back to UEFI and install.

    Don’t change anything regarding the hard disk, with what we have done, it is necessarily in the correct format.

    ---------------------------------
    I’m really wondering how and with what you created it???...

    (Rufus we’ll see if needed but it’s only useful in case of doubt about the key created by the Microsoft software that automatically sets the correct format)
    3
    1. Bob36180 Posted messages 335 Status Member 17
       
      Yes, that's its key... I don't know if Microsoft's site will properly input its key; we'll see...
      0
      1. gugu01 Posted messages 15669 Registration date   Status Contributor Last intervention   4 702 > Bob36180 Posted messages 335 Status Member
         
        Microsoft site, rather Microsoft software, and yes it works correctly, we use Rufus more for the reverse, to convert the ISO into a different format for a classic BIOS (MBR for BIOS).
        0
  3. mamiemando Posted messages 33228 Registration date   Status Moderator Last intervention   7 944
     
    Hello,

    Here are the steps I would follow
    1) get a recent Linux (e.g. >= jessie for debian), so that efi is well supported
    2) in the "bios" (uefi), disable secure boot during the installation
    3) install Linux normally (without overwriting Windows, on dedicated partitions)
    4) reboot into Linux
    5) install the package 
    grub-efi-amd64

    6) re-enable secure boot

    But to be completely honest, secure boot and uefi are among the things that are really not natural for me today (and far too restrictive for the security they provide), so I hope I haven't said anything wrong.

    Good luck
    1
    1. Asilaletup
       
      Thank you very much, I will try to do it and I will let you know the result!
      I just wonder how to reinstall Linux since I unfortunately deleted the most important partition (my PC doesn't go beyond the Acer logo when turning on, then it shows an error message)! Can I do it using another computer like I would for Windows?
      0
  4. gugu01 Posted messages 15669 Registration date   Status Contributor Last intervention   4 702
     
    Hello,

    I'm not quite getting the initial idea...

    Do you want to install Windows 10 and Linux on the same PC?

    Linux isn't really my "domain," but what's the easiest?
    Wouldn't it be simpler to install Windows 10 using Diskpart from the installation USB, since you no longer have Linux, and then reinstall Linux afterwards?

    Keep your BIOS in UEFI mode.
    Boot from your Windows 10 installation USB.
    When you reach the partition table error, press Shift + F10.
    A command prompt opens, type and validate each command one by one:

    DISKPART
    LIST DISK
    SELECT DISK number of the relevant disk
    CLEAN ALL
    CONVERT GPT

    At that point, we should be good on the partitioning, so go back, return to the table, refresh or create a new partition.
    Choose your partition and install.
    0
    1. Asilaletup
       
      Actually, the initial idea is to install only Windows 10.
      Thank you very much for your reply, I will try that right away.
      0
      1. Asilaletup > Asilaletup
         
        Another problem has arisen now, Windows does not want to install, it says to me: "We couldn't install Windows at the selected location. Please check your media drive. Here is additional information about what happened: 0*80300024."
        0
      2. gugu01 Posted messages 15669 Registration date   Status Contributor Last intervention   4 702 > Asilaletup
         
        Did you do well to create a single partition again?
        0
  6. mamiemando Posted messages 33228 Registration date   Status Moderator Last intervention   7 944
     
    Hello,

    The initial idea is to only install Windows 10.

    Ideally, you should follow this tutorial. In your case, you just need to remove grub and install Windows if it is not already installed.

    If Windows is already installed, once grub is removed, you will need to ensure that everything is "as it was" (UEFI, secure boot enabled) for it to be able to boot.

    Good luck!
    0