FakeRaid Mirror

Question

GPGPU

Now, after loading, the system sees 4 partitions instead of two, and those from which the system boots contain old files ...

This is a fake raid on the nVidia chip (Asus A8N-SLI mother)

When you try to Rebuild through the BIOS, nothing happens.

Answer 1

What type of raid was it?
What does 4 sections mean instead of two?
How many disks?
And what does old files mean?

Answer 2

Probably, one of the disks disappeared a long time ago (when old files are visible there, date), but you didn’t notice :)
PS no raids from the BIOS are evil!