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Windows 7: Partition help!

17 May 2009   #1
ToonArmy

Windows 7 Ultimate x64 (Build 7600 RTM)
 
 
Partition help!

I booted up my computer this morning only to find that my 'D' partition has disappeared! I can see the partition in disk management but the drive letter has gone and when I try to assign a letter it gives me an error. The partition has all my downloads and tools on it so I really need to recover if possible!




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17 May 2009   #2
ten

XP / Windows 7 Pro RTM
 
 

Try asigning a drive letter with this - EASEUS Partition Master Home Edition
Why do you make your OS partition 342 GB? Windows 7 just needs 16 plus whatever your gonna install.
My System SpecsSystem Spec
17 May 2009   #3
ToonArmy

Windows 7 Ultimate x64 (Build 7600 RTM)
 
 

That programme wont work on 64bit Windows. My 'C' drive has the OS and all installed programmes and games etc on it
My System SpecsSystem Spec
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17 May 2009   #4
SIW2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

What options does it give you on the rt click in Disk Management?
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17 May 2009   #5
ToonArmy

Windows 7 Ultimate x64 (Build 7600 RTM)
 
 

Change drive letter and paths...
Format...
Delete Volume...
Properties

All the rest are greyed out
My System SpecsSystem Spec
17 May 2009   #6
SIW2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

It doesn't think it is formatted.

Any idea what may have caused that?

Do you have a partition app. , like Paragon - and what does it say?
My System SpecsSystem Spec
17 May 2009   #7
ToonArmy

Windows 7 Ultimate x64 (Build 7600 RTM)
 
 

I forgot to mention I installed Partition Magic yesterday but it wouldnt work (an error was coming up the program wouldnt start) so I uninstalled it again.
My System SpecsSystem Spec
17 May 2009   #8
12eason

Windows 7077
 
 

Elevated CMD > Diskpart > select disk > select partition > Assign?
My System SpecsSystem Spec
17 May 2009   #9
SIW2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

Partition Magic hoses NT6 systems - it's got to be more than a coincidence that you just installed it.

Seems it tried to move the start sectors and Windows has lost track of what is going on.

3 possible solutions :

1. get a decent partition manger - Paragon is my choice. Shrink the unrecognsed partition a little then extend it back. That often cures these kind of errors.

2. Use Diskpart to shrink and extend it a little as above - but I suspect Diskpart won't recognise it as being formatted.

3. Start to do a clean install from the 7 dvd, when you get to the select partition screen, choose Drive Options (advanced) , shrink that partition and extend. Abort the installation.
My System SpecsSystem Spec
17 May 2009   #10
cwzkevin

Windows 7 x64 and x86
 
 

There is one solution, I think it will work for you. It worked for me in the same situation as yours.

Put the drive back under any winxp os, then you will find the partition read/write able. Copy the files you need from there to anyother harddisk! I then put the drive back under seven, delete the partition D, re-assign the partition D, copy back all the files.
My System SpecsSystem Spec
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 Partition help!




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