Can't start the second Windows 10 installation after upgrading from legacy to UEFI

F5F Stay Refreshed Software Operating Systems Can't start the second Windows 10 installation after upgrading from legacy to UEFI

Xikam20
Member

06-20-2021, 03:01 AM

Yes, it is possible to install both Windows 10 and Windows 11 on the same system during a release.

Xikam20

06-20-2021, 03:01 AM #1

Yes, it is possible to install both Windows 10 and Windows 11 on the same system during a release.

Surgeon3
Member

144

06-21-2021, 09:39 AM

You must revert to the legacy version to start Windows 10, or reinstall it within UEFI settings.

Surgeon3

06-21-2021, 09:39 AM #2

You must revert to the legacy version to start Windows 10, or reinstall it within UEFI settings.

Joshierulz19
Junior Member

06-28-2021, 07:15 PM

You don't have to reinstall Windows for UEFI. This guide shows how to change your drive to GPT. Make sure your drive is ready before turning on Secure Boot!

Joshierulz19

06-28-2021, 07:15 PM #3

You don't have to reinstall Windows for UEFI. This guide shows how to change your drive to GPT. Make sure your drive is ready before turning on Secure Boot!