Wednesday, March 7, 2018

thinkpad - How to boot to Windows 8.1 in UEFI boot mode?

I recently installed Windows 8.1 from a USB drive. In order to boot from the USB drive, I had to disable secure boot in the BIOS and switched to Legacy boot mode (from UEFI boot mode).


After the installation finishes, I no longer need to boot from the USB drive so I want to switch back to secure boot (UEFI boot mode) but then Windows wouldn't boot.


What did I do wrong? Do I need to install Windows again?

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