Question M2 SSD not showing up in boot bios after disabling CSM on Motherboard Aorus B450 Elite.

[Bart2525]

How comes? Its MBR in EUFI. I need to set CSM to disabled because I want to use secure boot for installing Windows 11 on it. On the M2 SSD there is a Windows 10 version in EUFI and MBR partition table. When I enable CSM i can set the disk to boot.

 

[rgd1101]

do you mean CSM?

windows 10 boot up when you have CSM enabled?

 

[Bart2525]

do you mean CSM?

windows 10 boot up when you have CSM enabled?

Yeah CSM sorry.
Yes when CSM is enabled the M2 SSD is listed in boot order otherwise if CSM is disabled its gone and can't even get it from boot menu.