Ubuntu 9.10 Desktop CD booted system could not mount internal harddisks attached to a RAID motherboard

[Tom H]

> I expect the command "dmraid -an" in a root terminal would do the job
> of de-activating the detected BIOS RAID set while keeping the metadata of
> the BIOS RAID set. (At this mean time I don't want to remove the settings
> (metadata) in the RAID BIOS, I may remove it later.)

dmraid -a n will definitely not touch your data but I think that there
is another solution but cannot check.

When you boot from the Ubuntu live cd, you can choose some kernel
options with one of the f-keys. nodmraid might be one of them.