Celeb Glow
news | March 27, 2026

BIOS does not see my SSD as a boot drive

I have a computer running Ubuntu server. I recently upgraded this computer with a new motherboard, CPU, memory and power supply. I am using the same SSD with Ubuntu server installed. My BIOS recognizes this SSD as a drive, however it does not see it as a boot device. Is there anything I can do to fix this besides reinstalling my OS?

Note: My old CPU was AMD and the new one is Intel.

  • Motherboard: ASRock Phantom Gaming 4 HS70
  • CPU: Intel Core i5 11400
  • SSD: Micron 1100 m.2 SATA 256GB
  • OS: Ubuntu server (unknown version)
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1 Answer

The problem was that my old motherboard was using CSM and my new motherboard uses UEFI. I installed Ubuntu server again, and then deleted all of the folders besides /boot and copied all my old folders back in. This is probably not recommended as there were a lot of errors, but it worked well enough for me to get the data out of my docker containers.

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