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I have a RAID5 array on my computer, 3X 200GB sata drives. Everything has worked great forever but all of a sudden when I turn it on the BIOS shows that only two of the three drives are functioning. The last drive shows up as "Unknown Disk". The array itself shows up as not boot-able as a result. I assumed this wouldn't even be a problem (isn't that what RAID5 is for anyway?) but no matter what I try I can't get it to boot. Even if the third drive is removed from the computer completely. Any ideas? Thanks!
Thanks for the advice, how would I go about testing the RAID controller? – Blake – 2013-05-10T17:59:01.083
1if you have some spare drives, see if you can create a new raid on them – Keltari – 2013-05-10T18:16:32.033
I don't really have any on hand that aren't being used for something. Any kind of utility I could burn to a disc etc and boot to that would run diagnostics like that? – Blake – 2013-05-10T21:16:18.060
1do you have a backup of your data? If so you can create a mirror on the two disks that wont boot just to see if its working properly. Beyond that, there isnt much else you can do... unless your RAID BIOS has some kind of built in test – Keltari – 2013-05-10T22:01:03.743
I do of the files but not the OS etc. I'll have to see if I can round up a few extra drives and try your first idea. – Blake – 2013-05-11T04:01:18.737