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Raid / Harddrive Issue


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#1 stu

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Posted 21 January 2008 - 06:28 PM

I recently had to get a hard drive recovered. When it came back I took out a secondary drive in my PC that was used as a backup drive. It was small and only 40 Gigs. I put in the drive I got back from the recovery folks and the drive showed up as H with all my data. After working on it and using is as a secondary drive for storing work on, the drive letter suddenly changed back to D which was the old drive. What I didn't realize is that Norton Ghost saw the drive as being part of an array and now it only shows 39 gigs of allocated space when it is a 500 gig harddrive. And I can't access the old data that I put on there all last week. I have since disabled Norton Ghost. I even tried putting the drive in another of my PC's but it says it is part of an ARRAY and only shows partial allocated space and I still can't see the data. When I boot to the Setup Menu it sees that it is a WD 500 gig harddrive and says it is controlled by the RAID BIOS. Is there anyway to see the other space or take it out of the ARRAY so that I can that data back, short of sending it off? Any help would be greatly appreciated.

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#2 RandomUser

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Posted 22 January 2008 - 07:57 PM

I'd like to know if this drive is Basic or Dynamic in disk management. It seems as though part of the disk was either a simple or spanned volume being controlled by Raid. A simple volume can be extended within the same drive or onto another drive and in these cases you have a Disk Group assigned to the Simple or Spanned Volume. The Disk Group might be part of the issue here.

What you may want to do is try placing the disk in an External USB case and determine if you can view the whole drive. If so, then back up your data
to another drive and reformat the drive in question.

Do no format this drive or any other disk function until you have your data copied to a Known working drive.

The other option is to change the drive from Basic to Dynamic if Disk managment says it's a basic disk.
DO NOT DO THIS until your data is backed up as it may cause data loss or data corruption, neither of
which is desirable.

Another option is to boot your PC, drive installed, to A linux LiveCD and attempt to transfer the data that way to another drive.
You may want to read up about how physical drives are managed by a computer and by an OS to understand what's going on.




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