1.    24 Apr 2016 #1
    Join Date : Jan 2015
    Posts : 9
    win 10 x64

    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?
      My System SpecsSystem Spec

  2.    24 Apr 2016 #2
    Join Date : Jul 2015
    Posts : 5,912
    Windows 10 Pro

    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 System SpecsSystem Spec

  3.    25 Apr 2016 #3
    Join Date : Dec 2015
    Posts : 2,154

    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 System SpecsSystem Spec


Similar Threads
Thread Forum
Solved Why are there so many Win 10 updates requiring reboot?
Almost every day for the last week or two, I find the system requiring restarting to finish installing an update. I used to use Linux and it was very rare for an update to require restarting. Windows 10 has frozen my games on many occasions now...
Windows Updates and Activation
Windows 10 Always Requiring Frequent Restarts
My machine requires frequent restarts, and it's not just the software that's installed on it, but Windows that's acting up. When I try to open the start menu, it won't open, and Action Center will do the same thing. Going into the Start Menu to...
Performance & Maintenance
Windows10 requiring product key
Please help, I had windows10 "successfully" installed. However, I had to while my hard drive and install windows7 home premium again...now if I try to reinstalled windows10 from there website it now asks me for a product key. Also I have waited,...
Installation and Setup
Surface 3 is requiring a password every time I wake it.
I have "Never" set as the option in then "If you've been away, when should Windows require you to sign in again?" in the new Settings menu. I have "Don't require a password" selected in the Control Panel Power Options. Surface 3 sleep and...
General Support
Build 10240 Requiring Activaation
Was running win 8 and updated to 8.1 through windows store. On 2 other computers I joined insiders and Win 10240 is running fine. Sooo I decided to load on this computer. insiders was closed so I found a clean download and installed. Problem is a...
Windows Updates and Activation
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 01:23.
Find Us
Twitter Facebook Google+

Windows 10 Forums