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Install Windows from a USB formatted with Rufus

snates Posted messages 18 Status Member -  
 Anonymous user -
Good evening everyone
I want to install Windows 8 from a USB key formatted with Rufus on a UEFI BIOS that I couldn't set to legacy.
So I do not want to set the BIOS to legacy, but rather know how to use Rufus so that my key can boot even though the BIOS is UEFI.

1 answer

  1. Anonymous user
     
    Hello,

    You create the key with Rufus by selecting the format "MBR for UEFI" and formatting it to FAT32. In principle, it should launch in UEFI.
    1
    1. snates Posted messages 18 Status Member
       
      At the end of the copy, it shows startup failure and the copy stops.
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    2. Anonymous user
       
      Re,

      at the end of the copy, it shows startup failure and the copy stops. : are you talking about the Rufus key or the installation of W8 itself?

      Why not just create the key using the command prompt? It's not complicated. Do you have a PC with W7 equipped with WinRAR or 7zip?

      You will know the source of the problem by ruling out (or not) the responsibility of the key.
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    3. snates Posted messages 18 Status Member
       
      I'm talking about Rufus, it displays: failed to modify boot file.
      I didn't know there was a way to do it with archiving software.
      Please explain to me in detail, I'm a novice.
      0
    4. Anonymous user
       
      You plug your USB key into a Vista or W7 PC and launch the command prompt in admin mode. 

      diskpart
      list disk

      You identify the number of your USB key here. 
      select disk n (replace n with the number of the key).
      clean (this wipes everything on it)
      convert mbr (in case you messed up somewhere)
      create partition primary
      format fs=fat32 quick (this creates and formats it to fat32)
      active (this makes it bootable)
      assign (this assigns a letter to it)
      exit

      Now, the USB key is bootable. You extract the W8 iso onto the key using winrar or 7zip. The key is ready.

      PS. To ensure you boot with it in uefi mode, disable csm and legacy in your bios. You can even rename the bootmgr.exe file at the root of the key to bootmgr.old. The PC will then launch bootmgr.efi instead.
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