Recover HFS+ partition after fail of SSD

Using TestDisk to repair the filesystem
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AKazak
Posts: 2
Joined: 10 Oct 2018, 03:56

Recover HFS+ partition after fail of SSD

#1 Post by AKazak » 13 Oct 2018, 14:57

Greetings!

Last week SSD (Crucial M550 1 TB SATA 6 Gb/s) with a single whole-drive HFS+ partition (no APFS) of my Mac has failed and I (hopefully temporarily) lost about 800 GB of data on important multi-year project.
Right after I felt that SSD actually failed I connected the SSD to a Windows-powered PC and ran TestDisk 7.1-WIP and the first thing I saw was the following:
Image

I took an image of the second (Macintosh SDD) partition using TestDisk to image.dd and saved it elsewhere.

Then I opened the image.dd with the TestDisk and did Quick Search and Deeper Search and got the attached results with quite a number of found partitions. However the scanning results are ambiguous, because before SDD fail I had a single large (whole-drive) HFS+ partition instead of large number of small ones...

What do you suggest to do next in order to recover the lost file system?

I would really appreciate your help...
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cgrenier
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Re: Recover HFS+ partition after fail of SSD

#2 Post by cgrenier » 15 Oct 2018, 06:21

Have you tried fsck as described in https://www.cgsecurity.org/testdisk.pdf ?
Can PhotoRec recover some data from your SSD ?

AKazak
Posts: 2
Joined: 10 Oct 2018, 03:56

Re: Recover HFS+ partition after fail of SSD

#3 Post by AKazak » 16 Oct 2018, 07:28

cgrenier wrote:
15 Oct 2018, 06:21
Have you tried fsck as described in https://www.cgsecurity.org/testdisk.pdf ?
Can PhotoRec recover some data from your SSD ?
I checked SDD's SMART attributes and found out that it is in a perfect hardware shape.
However in the result of some research I realized that after update Mac OS to High Sierra it implicitly converted its HFS+ volume to APFS.
Therefore, to my understanding on the SDD prior to failure I should have had the folowing GUID partition table:
1) EFI partition (FAT32)
2) APFS container:
2a) Macintosh SSD APFS volume;
2b) Recovery volume.

So in the result it turned out that I didn't have HFS+ partition prior to failure (time to rename the topic :).
Currently it seems that I need to re-check whole partition table.
Now, does TestDisk support/detects APFS search and recovery?

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