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After upgrading to Windows 8 Pro from Vista I noticed an unformatted Local Disk (M:). I think that this is my old Vista recovery partition (since I have nothing else connected) but I'm not sure. Is it safe to format that partition?

Here is what I get from Disk Management and Windows Explorer:

enter image description here

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Open disk management and have a look. –  Moab Nov 8 '12 at 2:18
    
If you can wait, why not contact tech suport at the PC manufacturer and ask them? the drive letter sounds strange (normally recovery prtitions don't have adroive letetr, but you might have added one somehow). Tech support ought to be able to tell you the size of the recovery parition; if this is differnt, then I say delete it. In my experience, the recovery parition is always the first on the disk, before drive C:. What about this one? –  Mawg Nov 8 '12 at 2:41
    
@Moab ok, from disk Management, I can see my recovery partition (not appearing in explorer) and it has no drive letter. but the drive M is a 24GB raw Healthy partition that i can't format. –  MimiEAM Nov 8 '12 at 9:17
    
post a screenshot –  Moab Nov 8 '12 at 15:04
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@MimiEAM Cut your losses and do a clean install. –  Mikhail Nov 8 '12 at 23:41
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1 Answer

  1. From disk managment, it is clear that it is not your recovery partition as it is too large. Neverthless, if you don't suspect there is data in the partition, it should be safe to erase.

  2. You should reinstall Windows because the partition scheme is not optimal, your system keeps crashing, and there are probably more things wrong.

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