Accidentally changed MBR to GPT

Using TestDisk to repair the filesystem
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favomedrano
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Joined: 23 Mar 2015, 23:37

Accidentally changed MBR to GPT

#1 Post by favomedrano » 23 Mar 2015, 23:49

I have a full disk Tuoro 4TB disk, originally with a MBR partition information, with two VFAT partitions.

I could read it in my ubuntu machine, but couldn't in a windows 8 machine, so i did the mistake in the disk administration window and clicked on the disk. "convert to GPT disk".

Now i can not read it in neither ubuntu or windows, I'm trying to recover the MBR , but when I run the analysis quick search appears only the first GPT reserved partition.


Its a good idea to change the partition information again to MBR, or do I let the deeper analysis run?

Thank you very much, I'm in panic right now!
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cgrenier
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Re: Accidentally changed MBR to GPT

#2 Post by cgrenier » 24 Mar 2015, 07:19

When running TestDisk, after selecting the disk, choose PC Intel instead of EFI GPT, Analyse, Quick Search.
If all your partitions are listed, choose Write and confirm.

Note that EFI GPT is recommanded for disk bigger than 2 TB.

favomedrano
Posts: 3
Joined: 23 Mar 2015, 23:37

Re: Accidentally changed MBR to GPT

#3 Post by favomedrano » 24 Mar 2015, 18:00

Thanks for the help!.
I did what you told me, and i found a partition Fat32 LBA, but when i press "p" to list the files, it says that the filesystem may be damaged.
PCIntelAnalize.png
Intel /PC Partition and Analize
PCIntelAnalize.png (44.53 KiB) Viewed 1280 times
PartitionFound.png
Partition Found
PartitionFound.png (52.37 KiB) Viewed 1280 times
Nofiles.png
No files found
Nofiles.png (34.86 KiB) Viewed 1280 times

Something can be done? run a deeper search, or write the MBR first .

favomedrano
Posts: 3
Joined: 23 Mar 2015, 23:37

Re: Accidentally changed MBR to GPT

#4 Post by favomedrano » 25 Mar 2015, 05:31

Did the deeper search, and it did not found any new partition, when i try to list the files says that the filesystem may be damaged..

Any other recommendation on what to do here?

(I get a Fat32 LBA partition on quick search, but I remember that the filesystem was a VFAT.)

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