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I have two partitions formed over two discs. After unplugging another hard drive I noticed that Windows would no longer recognized the drives.

I tried looking in the BIOS and discovered the motherboard didn't seem to be picking them up either. Thinking it may be a loose connection I unplugged and plugged them back in, seemingly fixing the problem.

However, after a few days, once again the drives disappeared from Windows, mid-boot. Unsure of what to do I tried a reboot, which seemed to fix the problem. This happened again after a couple of days and subsequently with increasing frequency until Windows would no longer pick up the drives at all.

After looking at disk manager I got the error messages attached. I tried 'reactivating' and then running chkdsk. As the drive I ran it on is large and contains my music (600gb, 10,000s of files), it took quite some time so I left it overnight. After checking on the PC chkdsk was gone and the drive was no longer detectable. I've repeated the process twice now. It's unclear if for some reason chkdsk is crashing and not finishing or actually completing its work in the time I leave it (around 12 hours).

Still, each time after I boot the PC the drives are viewable for a minute or two but files completely inaccessible.

There is a possibility that when I unplugged the drives that I mixed up the SATA cables and ports - is there a possibility that is what has caused this?

Either way, what would be the best way to get the data from the discs?
 

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It looks like one of the drives failed and your spanned set would loose all data, there is no redundancy in Spanned Volumes, unlike a RAID 1 or 5.
Hope you have a back up.
If not you can try to recover the files using the free TestDisk program. I have had the best luck with GetDataBack. You will need another drive of the same size or larger to restore your files to.
 

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Discussion Starter #3
Thanks for the response, i'll give it a try :)

Once/if i fix this what can i do to prevent this occurring if I go with spanned partitions again? Does it look like it would have been the sata being unplugged that caused the issue?
 

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I did a recovery with GetDataBack and it only recovered around 6gb. Alot of those files are corrupt.

Any further ideas?
 

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If data recovery has failed and you don't have a backup of your important files, there's not much more you can do. You could try some other recovery software (free or paid) or send the hard drive to a specialist (very expensive).
 

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Data Recovery is always hit or miss, you should be thankful that you got anything at all. And you now know that you should always have a current backup of files you can't live without.
If TestDisk and GetDataBack can't recover the files, Most other software probably won't work either. You can try doing a Disk Image of your Spanned Volume with Either of those programs, and then scan the Image to recover the files. You may not get any more then your first run at it. Data Recovery Software Products - Runtime Software Products
Your only alternative is to send it to the very, very expensive Data Recovery Specialists.
 
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