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Windows 7: How to erase 2nd drive's bogus GPT, and restore origional MBR?

04 Apr 2012   #1
Charlweed

Windows 7 professional x64
 
 
How to erase 2nd drive's bogus GPT, and restore origional MBR?



A buggy drive management tool erased my SECOND (not boot) hard drive's MBR and replaced it with a completely bogus and useless GPT.


My actual partitions should be intact, and I am optimistic that partition recovery tools would be able to find them and restore the original partition table. However, they won't work, as long as the drive is identified as a GPT disk.


How can I erase all traces of GPT so I my recovery tools can rebuild an MBR?


I have MBRWiz, but I am shy about using it, and I have no experience with it, and I fear for my data.


My System SpecsSystem Spec
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04 Apr 2012   #2
Nomad8459

Windows 7 64 bit
 
 

I just recently had this issue but with a portable USB HDD that was formatted using WIN XP.

What I did was use my WIN XP to remove all the data from the drive and then followed this post:

How to delete GPT Protective Partition - Paul Gu|blog

Worked like a treat, but this may not be quite the same situation as yours and as that post says, you will lose all the DATA from the drive.
My System SpecsSystem Spec
04 Apr 2012   #3
F5ing

Windows 7 Ultimate x64
 
 

See if testdisk can help you out: CGSecurity

If you can use this before mucking around with the drive too much you'll likely lose no data.
My System SpecsSystem Spec
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04 Apr 2012   #4
SIW2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

It might help if you let us know which program you used to convert the disk to gpt.
My System SpecsSystem Spec
04 Apr 2012   #5
Charlweed

Windows 7 professional x64
 
 

I got some compensation from the vendor of the "management tool", in exchange for a promise of no public claims that their crappy software is crappy. So I will not. But if the "management/recovery" software does not not explicitly support GPT and UEFI, do not even let it be possible for it to run when you are "managing" your drives.

Please share if you know of robust GPT/UEFI partition recovery software.
My System SpecsSystem Spec
04 Apr 2012   #6
kegobeer

Windows 7 Ultimate x64 SP1
 
 

The only tool I've read about that works is Acronis True Image Home 2012 with the plus pack addon. I have no personal experience with it, but I've read a few posts that said it worked.
My System SpecsSystem Spec
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 How to erase 2nd drive's bogus GPT, and restore origional MBR?




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