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Windows 7: Active partition disappears

04 Aug 2011   #1
doniel

Win 7 Ultimate 32
 
 
Active partition disappears

I recently installed Win7. I'm still mostly in XP, and the partition that has always been C: (first partition on disk 0) contains my boot files. When I select Windows 7 from the boot menu, it boots into my Win7 installation, which is located on the partition that has always been drive L:.

Windows 7 makes L: C:. In other words, when listing the drives in Explorer or Disk Management, the drive on which I installed Win7, which has always been L: in XP, now shows as C:. My original C: doesn't show in Explorer at all, and in Disk Management, it appears without a drive letter assigned to it.

In effect, Win7 has made a partition totally inaccessible.

Is there any solution?


My System SpecsSystem Spec
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04 Aug 2011   #2
Maguscreed

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

You simply need to give it a drive letter for win 7.
This shouldn't affect boot orders as the system only sees disk 0 partition 1 or disk 0 partition 2
it doesn't care about letters.
My System SpecsSystem Spec
04 Aug 2011   #3
DeaconFrost

Windows 7 Ultimate x64 SP1
 
 

You are experiencing one of the many issues that lead me to rail against dual-booting. Since virtualization became free and computers had the power and hardware support for it, dual-booting was declared a dead tech, at least to me. I never liked the fact you could render one or both OSes unusable.

If it was me, I'd back up my data completely, wipe the drive, and just install Windows 7 clean. If you still need XP for some unique reason, throw it in VirtualBox or install XP Mode.
My System SpecsSystem Spec
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04 Aug 2011   #4
Maguscreed

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

nevermind what I said .... ^^^
My System SpecsSystem Spec
04 Aug 2011   #5
DeaconFrost

Windows 7 Ultimate x64 SP1
 
 

After reading Magnuscreed's solution again, I'd give that a shot first. If it is as simple as assigning it a drive letter, my suggestion would be WAY overkill.
My System SpecsSystem Spec
04 Aug 2011   #6
Maguscreed

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

It will give win 7 access to the partition.
I can not be 100% sure that it may not cause problems when booting back into xp though I really do think just getting xp mode for win 7 is your easy out.
Download Windows XP Mode
My System SpecsSystem Spec
05 Aug 2011   #7
doniel

Win 7 Ultimate 32
 
 

I'm embarrassed!

When I read your suggestion to assign the partition a drive letter, my initial reaction was that I'd already tried that. Since it had been a few weeks since I'd last worked on the problem, however, I decided not to rely on my memory. I booted into Win7 and found that there was absolutely no problem assigning it a drive letter.

My feeling is that I got frustrated when Win7 wouldn't let me change C: back to L:, and that I therefore never got around to trying assign a drive letter to the partition that had no drive letter.

Thanks very much to both of you, maguscreed and DeaconFrost!
My System SpecsSystem Spec
05 Aug 2011   #8
Maguscreed

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

lol yeah it just needed a drive assignment so you could access it. Glad your settled please go to the top and mark the thread solved when you get a moment.
My System SpecsSystem Spec
05 Aug 2011   #9
doniel

Win 7 Ultimate 32
 
 

I marked it as solved as soon as I posted my last reply.
My System SpecsSystem Spec
05 Aug 2011   #10
Maguscreed

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

good deal hopefully you'll never need us again
My System SpecsSystem Spec
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