Asrock B450 Pro4 - SecureBoot problem

[Karinek]

So, I was trying to upgrade to Windows 11, everything works fine except for SecureBoot. When I turn on secureboot my main drive (Samsung 980 500GB) disappears from the boot drive section and appears again when I disable SecureBoot. Anybody knows fix or has the same problem? I need to have the SSD as a boot optiuon, cuz my OS is installed on it. 

 

 

[StDragon]

The boot drive needs to be formatted in GPT (not MBR), and CSM mode needs to be disabled for SecureBoot to be enabled.

[Karinek]

1 minute ago, StDragon said:

The boot drive needs to be formatted in GPT (not MBR), and CSM mode needs to be disabled for SecureBoot to be enabled.

Okay, so where I can see if my SSD is formated in GPT or MBR? And if I have MBR the only option is to reinstall the Windows right? 

[Karinek]

12 minutes ago, Karinek said:

Okay, so where I can see if my SSD is formated in GPT or MBR? And if I have MBR the only option is to reinstall the Windows right? 

SO, my drive is 100% MBR, how do I convert it into GPT when my OS is running on it? 

 

[StDragon]

53 minutes ago, Karinek said:

SO, my drive is 100% MBR, how do I convert it into GPT when my OS is running on it? 

 

https://www.windowscentral.com/how-convert-mbr-disk-gpt-move-bios-uefi-windows-10