32tb RAID 0 accidentally formatted to Mac OS extended Journaled

Using TestDisk to repair the filesystem
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VideoEditor
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Joined: 26 Jan 2018, 01:21

32tb RAID 0 accidentally formatted to Mac OS extended Journaled

#1 Post by VideoEditor » 26 Jan 2018, 01:39

An application formatted my 32TB Raid 0 to a Mac OS Extended Journal. Is it possible to revert back to the previous Raid format?

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cgrenier
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Re: 32tb RAID 0 accidentally formatted to Mac OS extended Journaled

#2 Post by cgrenier » 26 Jan 2018, 06:59

You can try to recover the previous partition, it will mainly depend on how much data have been overwritten by the HFS+ filesystem.
Try https://www.cgsecurity.org/testdisk.pdf chapter "Recovering deleted partition using TestDisk"

VideoEditor
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Re: 32tb RAID 0 accidentally formatted to Mac OS extended Journaled

#3 Post by VideoEditor » 26 Jan 2018, 20:05

First off, thank you for writing this software. I am humbled that you took the time to respond.

Ok I followed the procedure listed in
9.5 Analyze current partition table
I am presented this screen. After a deep search a few (I stopped it because I wasn't sure and it was at 0% after two hours. I am not sure what to do. If it helps its an Areca TB2 Raid of 32TB.

TestDisk 7.1-WIP, Data Recovery Utility, January 2018
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org

Disk /dev/rdisk6 - 31 TB / 29 TiB - 62499979264 sectors
Partition Start End Size in sectors
D EFI System 40 409639 409600 [EFI System Partition] [EFI]
D EFI System 46 409645 409600 [EFI System Partition] [EFI]
>D Mac HFS 409640 62499717031 62499307392
D Mac HFS 648296 62499955687 62499307392
D Mac HFS 648488 62499955879 62499307392
D Mac HFS 650488 62499957879 62499307392
D Mac HFS 650728 62499958119 62499307392
D Mac HFS 652024 62499959415 62499307392
D Mac HFS 652264 62499959655 62499307392
D Mac HFS 653272 62499960663 62499307392
D Mac HFS 653960 62499961351 62499307392
D Mac HFS 655016 62499962407 62499307392
D Mac HFS 655272 62499962663 62499307392
D Mac HFS 656592 62499963983 62499307392
D Mac HFS 656976 62499964367 62499307392
D Mac HFS 657504 62499964895 62499307392
D Mac HFS 657728 62499965119 62499307392
D Mac HFS 658464 62499965855 62499307392
D Mac HFS 659408 62499966799 62499307392
D Mac HFS 660480 62499967871 62499307392
D Mac HFS 661584 62499968975 62499307392
D Mac HFS 662952 62499970343 62499307392
D Mac HFS 663160 62499970551 62499307392
D Mac HFS 663896 62499971287 62499307392
D Mac HFS 664056 62499971447 62499307392
D Mac HFS 664184 62499971575 62499307392
D Mac HFS 664296 62499971687 62499307392
D Mac HFS 664936 62499972327 62499307392
D Mac HFS 665144 62499972535 62499307392
D Mac HFS 665448 62499972839 62499307392
D Mac HFS 665656 62499973047 62499307392
D Mac HFS 665976 62499973367 62499307392
D Mac HFS 666008 62499973399 62499307392
D Mac HFS 666344 62499973735 62499307392
D Mac HFS 666472 62499973863 62499307392
D Mac HFS 666824 62499974215 62499307392
D Mac HFS 667016 62499974407 62499307392
D Mac HFS 667208 62499974599 62499307392
D Mac HFS 667336 62499974727 62499307392
D Mac HFS 667616 62499975007 62499307392
D Mac HFS 667824 62499975215 62499307392
D Mac HFS 668016 62499975407 62499307392
D Mac HFS 668136 62499975527 62499307392
D Mac HFS 668632 62499976023 62499307392
D Mac HFS 668904 62499976295 62499307392
Structure: Ok. Use Up/Down Arrow keys to select partition.
Use Left/Right Arrow keys to CHANGE partition characteristics:
P=Primary D=Deleted
Keys A: add partition, L: load backup, T: change type,
Enter: to continue
HFS+ blocksize=32768, 31 TB / 29 TiB


Structure: Ok. Use Up/Down Arrow keys to select partition.
Use Left/Right Arrow keys to CHANGE partition characteristics:
P=Primary D=Deleted
Keys A: add partition, L: load backup, T: change type, P: list files,
Enter: to continue
FAT32, blocksize=512, 209 MB / 200 MiB


I don't know what to do from here. I am not sure what to do. Please advise.

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Re: 32tb RAID 0 accidentally formatted to Mac OS extended Journaled

#4 Post by cgrenier » 05 Feb 2018, 18:18

What format was using the raid0 before been reformated as Mac OS HFS+ ?

VideoEditor
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Re: 32tb RAID 0 accidentally formatted to Mac OS extended Journaled

#5 Post by VideoEditor » 06 Feb 2018, 18:49

Mac OS Extended Journaled

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Re: 32tb RAID 0 accidentally formatted to Mac OS extended Journaled

#6 Post by cgrenier » 07 Feb 2018, 08:17

Same filesystem before and after your reformat the partition, it's not a good situation. You can try to recover your data with PhotoRec but it will not recover the original filenames and sorting 32GB will be horrible.

VideoEditor
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Joined: 26 Jan 2018, 01:21

Re: 32tb RAID 0 accidentally formatted to Mac OS extended Journaled

#7 Post by VideoEditor » 09 Feb 2018, 23:13

Thanks....Yea I am sorting now. My MXF files seem to be corrupt....I think its the headers...any advice?

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