Setup now requiring EFI


  1. Posts : 31
    win 10 x64
       #1

    Setup now requiring EFI


    I corrupted my win10 install with a bad driver update. I updated 5 drivers at the same time, Ya, I know bad idea.
    So I pulled out my USB stick with an older win 10 iso on it. I have used this version twice before.
    I booted to that USB stick,and started the win10 install. I reformatted the win 10 partition for a clean install, as well as the little 462mb partition.
    Note the SSD that had win 10, also has Win 7, and win 8.1 bootable partitions.
    Now I get "The selected disk has a MBR partition table. On EFI systems, Windows can only be installed on a GPT disks."
    I have never had this before during an install.
    My system is a custom built machine, with a Asus P8Z77-V Deluxe MB. I have not made any changes to any MB settings in over a year.
    What can I do to reinstall win 10?
    thanks
      My Computer

  2. NavyLCDR's Avatar
    Posts : 15,574
    Windows 10 Pro
       #2

    When you boot from the Windows 10 USB do not select the option that says UEFI USB. Select the option for just plain USB. This is when you are selecting the device to boot from before the computer actually boots from anything.
      My Computer

  3. cereberus's Avatar
    Posts : 12,032
    Windows10
       #3

    Above may not work - not all BIOSes give option for eufi USB or MBR USB startup.





    In any case, you should use latest version using

    Windows 10

    Also make sure bios is set to legacy bios install.
      My Computer


 

  Related Discussions
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 12:14.
Find Us




Windows 10 Forums