New build won't recognize WIN10 SSD?
I bought the AMD Ryzen 5-7600X, ASUS B650M-A AX II MB and DDR5 16GB memory. System will boot to new SSD with WIN11 but won't recognize WIN10 SSD not DVD drive for booting.
All drives visible in BIOS but only WIN11 drive boots.
ASUS says to add graphics card.
Answers
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Likely the old drive is legacy boot. Enable CSM.
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SSD and DVD show in BIOS but CSM is grayed out. Created new WIN10 SSD from Windows install USB and that runs fine.
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Not sure why CSM can't be enabled, but yeah. If you do the Windows install with CSM disabled it'll be a UEFI boot. The old one must of been legacy which is going to require support for legacy boot which is disabled by default.
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