Question M.2 Drive Listed as "Unknown Device" in BIOS

[TiCoyote]

I recently ran into a problem that my M.2 drive disappeared after a Windows Update. It was in the CPU slot, but switching it to another slot made it reappear. Then I updated the chipset drivers, and put it back in the CPU slot and it continued to work. To push my luck further, I decided to update the BIOS. In the Q-Flash screen, all of my other drives were listed with the name of the manufacturer, but the M.2 (Samsung 990 Pro) was listed as "unknown device." I could still view the folders in that drive on the Q-Flash screen. Does anyone know why this would happen, and whether it was related to the disappearance issue.

I guess I should check whether it is still listed as unknown now that I have updated the Bios.

Thank you.

 

[Lutfij]

Make and model of your motherboard and it's BIOS version at this moment of time? Did you clear the CMOS after you'd verified you flashed the BIOS to the latest version?

 

[TiCoyote]

The MoBo is a Gigabyte Z690 UD AX DDR4

The Bios version is F29. Sept 29, 2024 release date.

I have not cleared the CMOS. What is the advantage to doing this? What are the risks?

 

[TiCoyote]

I checked the Bios. It recognizes the M2 now and shows it by name.