HELP! Accidental Disk Utility Partition on Mac OS 10.6.8

How to use TestDisk to recover lost partition
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Posts: 2
Joined: 26 Mar 2012, 22:01

HELP! Accidental Disk Utility Partition on Mac OS 10.6.8

#1 Post by colinmquinn »

I was cleaning off some WD caviar black drives to create a new Raid5 last night and accidentally clicked partition on the wrong drive in disk utility. I repartitioned my 8x1TB Maxx Digital Raid Tower. It's a hardware raid (Areca dual SAS card). The data is all still there and the hardware is all in perfect working order. I just need to revert the filesystem. But I'm freaking out and am not totally confident what to do exactly.
I can't get disktest to show me my old partition name, i can however see the files in media recovery software.
I am confident that disktest will be successful if I can get some help with punching the right settings.
My LIFE is on my raid, and the directory structure and file names are super important.

There are 8 WD Caviar Black drives in the HW raid5 tower connected via dual SAS to an Areca card.
So far the only thing I have done is reformatted the drive with a new name.
This is my system profiler info:
SCSI Logical Unit @ 0:

Capacity: 7 TB (6,999,999,512,576 bytes)
SCSI Logical Unit Number: 0
Manufacturer: MAXX
Model: MAXX1221-VOL#00
Revision: R001
Removable Media: Yes
Detachable Drive: No
BSD Name: disk6
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Not Supported

I won't be able to sleep, or live until I get this back the way it was.
Why doesn't the Undo button in disk utility do anything anyway. It's inevitable for mess ups.

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Joined: 25 Mar 2012, 10:21
Location: Strasbourg, France.

Re: HELP! Accidental Disk Utility Partition on Mac OS 10.6.8

#2 Post by remy »

"reformatted" : Do you mean you create another partition table, but don't create another filesystem or do you already have created another filesystem over the previous one ?

In first case, should be solved by testdisk by scanning your raid volume, with a GPT table format.