AM4 MB doesn't support Windows 10 secure boot?

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   My motherboard model is AB350M, in UEFI settings there are 2 options regarding secure boot, one is disable and 2nd one is "Windows 8" (or Enable Win 8 secure boot).Does this mean that my motherboard doesn't support secure boot for Windows 10?

Edited by WatermelonIsAFruit - 11 Apr 2018 at 5:05pm

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WatermelonIsAFruit Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 05 Nov 2017 Status: Offline Points: 15	Post Options Post Reply Quote WatermelonIsAFruit Report Post Thanks(0) Quote Reply Topic: AM4 MB doesn't support Windows 10 secure boot? Posted: 11 Apr 2018 at 5:05pm
	My motherboard model is AB350M, in UEFI settings there are 2 options regarding secure boot, one is disable and 2nd one is "Windows 8" (or Enable Win 8 secure boot).Does this mean that my motherboard doesn't support secure boot for Windows 10? Edited by WatermelonIsAFruit - 11 Apr 2018 at 5:05pm

Isosceles Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Apr 2018 Status: Offline Points: 2	Post Options Post Reply Quote Isosceles Report Post Thanks(0) Quote Reply Posted: 12 Apr 2018 at 8:05am
	Asrock just hasn't changed the boilerplate language they've been using for that feature since the Windows 8 days. Secure Boot works with any version of Windows since 8.0 (so it'll work just fine with 8.1 and 10).

WatermelonIsAFruit Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 05 Nov 2017 Status: Offline Points: 15	Post Options Post Reply Quote WatermelonIsAFruit Report Post Thanks(0) Quote Reply Posted: 12 Apr 2018 at 5:19pm
	When I tried to enable it, I got a message saying that CSM should be disabled so I disabled CSM, enabled secure boot and after that I couldn't boot into my OS (UEFI was the default boot).I reverted the changes (enabled CSM) and managed to boot properly.If CSM needs to be disabled and I can't boot into the OS (while it's disabled) how am I supposed to enable secure boot? Another thing, when CSM is enabled I can see my HDD in the boot options but when it's disabled that option disappears (I can't even set it manually).

Isosceles Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Apr 2018 Status: Offline Points: 2	Post Options Post Reply Quote Isosceles Report Post Thanks(0) Quote Reply Posted: 13 Apr 2018 at 12:59am
	Do you know if you have Windows installed in UEFI mode? If not , Secure Boot will not work. Secure Boot also requires your add-on hardware (graphics card, ethernet adapter, etc...) to have signed, UEFI-capable drivers. Almost any reasonably modern hardware does, but every once in a while you'll run into something older that doesn't support it. It's normal for the hard drive options to disappear without CSM enabled, you'll usually just see an option like "Windows Boot Manager".

WatermelonIsAFruit Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 05 Nov 2017 Status: Offline Points: 15	Post Options Post Reply Quote WatermelonIsAFruit Report Post Thanks(0) Quote Reply Posted: 13 Apr 2018 at 4:04pm
	For some reason my OS wasn't installed with GPT.Why did AsRock even leave CSM mode on by default...How do I install windows in UEFI mode?Do I just turn off CSM before installing it (and make a GPT bootable installation drive) or do I need to do it manually via CMD and diskpart?