I've got a 250GB SATA2 hard drive. Yesterday I boughy myself a pair of 1TB HDDs which I intend to put into a RAID-1.
If I enable the RAID functionality in the BIOS, I can setup the two drives in a RAID-1 without a problem. However, I can't see the old 250GB hard drive from the BIOS anymore, only the newly made RAID. It seems I need to make a JBOD from it. This however, will erase its data, won't it? So I was wondering, if you know whether typically one can have 2 drives in a RAID while having 1 not in a RAID. I presume, it's got something to do with my BIOS. My mobo is a M2N-X, sporting a nForce 520.
Of course, I can also make a software RAID from within my Windows 7, but will the software array work under Ubuntu? I somewhat doubt it but I don't know anyway.