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Windows 7: 500GB HDD only shows as 90GB ?

10 Aug 2012   #1

Windows 7 pro x64
 
 
500GB HDD only shows as 90GB ?

I have a WD 500GB HDD plugged into my PC via USB, the drive was brand new and had a 90GB partition and a 410GB partition on it, I formatted the larger partition with Partition Wizard and now in disk management the drive only shows as 90GB, there is no unallocated space where the partition was before. I've run 5 different partition recovery tools (Partition Wizard, Acronis True Image WD, Easus Partition Recovery, Partition Table doctor, Active Partition Recovery) but none of them can see anything more than 90GB, what's happened to the rest of it and how can I recover it?
Thanks

My System SpecsSystem Spec
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10 Aug 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64
 
 

Hi,

Can you post a screen capture image of the Disk Management screen please?

Screenshots and Files - Upload and Post in Seven Forums

Regards,
Golden
My System SpecsSystem Spec
11 Aug 2012   #3

Windows 7 pro x64
 
 

I've made and deleted that volume several times, always the same.

My System SpecsSystem Spec
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11 Aug 2012   #4

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64
 
 

Mmm.....did you format as NTFS in Partition Wizard?

Can you upload another image, but this time from Partition Wizard?

Regards,
Golden
My System SpecsSystem Spec
11 Aug 2012   #5
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

You must have formatted the 410GB partition into an unknown format (unknown to Windows 7). If it is not NTFS or Fat32, it will not show.
My System SpecsSystem Spec
11 Aug 2012   #6

Windows 7 pro x64
 
 

I formatted it to NTFS but even if I had accidentally made it in some other format surely one of the 5 partition recovery programs would have spotted it?

My System SpecsSystem Spec
11 Aug 2012   #7
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

I see that the J partition is in NTFS. But what about the rest. Maybe you should reformat the whole drive.
My System SpecsSystem Spec
11 Aug 2012   #8

Windows 7 pro x64
 
 

I've done that half a dozen times already, always comes back as 91GB.
What tells the drive it's capacity size, is it stored in the partition table, MBR or firmaware?
My System SpecsSystem Spec
11 Aug 2012   #9

Windows 7 Home Premium 32-Bit - Build 7600 SP1
 
 

The 91 GB partition is the only one that is Basic. The others are Dynamic. It looks like a real problem.

Convert a Dynamic Disk to a Basic Disk This might be a good place to start reading.
My System SpecsSystem Spec
11 Aug 2012   #10

Windows 7 pro x64
 
 

The other drives are nothing to do with this problem. This problem exists on this 500GB/91GB drive on multiple PC's.
My System SpecsSystem Spec
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 500GB HDD only shows as 90GB ?




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