I have a Gigabyte GA-EP45 extreme, which contains a "Intel Matrix RAID controller". On lspci outputs as:
RAID bus controller: Intel Corporation 82801 SATA Controller [RAID mode]
I bought two equal hard drives, (WD Caviar Blue(WDC WD10EZEX) to be exact) and i put both together as an array and it works fine, till i boot the operating system.
It recognizes the RAID array and gives it two addresses (/dev/md126 and /dev/md127), and when i first opened a disk manager utility(like the gnome-disk-utility) it tells that the disks are syncing. I didn't understood why were two empty disks syncing, nor knew what were they exactly doing, but judging by the speed and time consumed the whole disk was copied.
When it finished i tried to open a disk format utility (gparted), but it got stuck on the "Scanning /dev/md126" information. I forgot about it, and used the gnome disk utility again, with no success, the disk was formating forever.
I rebooted the computer, and what a surprise when the disk was syncing again... after two hours, i tried to format under the command line, but it is stuck on "Writing partition table to disk..."(cfdisk) How can i format these two drives?
PS: As i got them(or trying to get), if one of them fails, what will happen to the other? Becomes an independent drive? Will i be able to get it working under other computer with no raid controller to copy the data?