How to Fix My SSD Partition with "Unknown Format"

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6 points

How to Fix My SSD Partition with "Unknown Format"

My system has recently crashed. I couldn't do any type of recovery, so I bought a new SSD and installed the OS on it. Now all of my files are on the spare SSD which I cannot fix and access the files. It is 240 gigabytes but only 3 gigabytes is visible. I had Mac OS which took more than 200 gigabytes and some 15 gigabytes allocated for Parallels to run Windows 10 when necessary. Now disk1s2, the main volume that I was using, and the other 15 gb volume, disk1s3, is "unknown format" and I cannot access my files. I am a master degree student and writing my dissertation. All of my files are in the unknown formatted volume. I need to reformat or repair it without losing data. When I try to change the format of these volumes, I get a warning that the disk would be erased. I know that there are ways to recover data using some software but I want my files back the way I organized. I mean I want it back as it was a week or two weeks before. To be clear enough, I will attach some screenshots from disk utility. Any useful help is appreciated. Please help me get everything back. Thank you in advance.

The first one is overall view of my elderly SSD.

This one is the volume that the main OS was installed. Most of my necessary stuff is in it. As you can see the format is unknown.

And this was probably the windows part, or it might be Linux part I am not sure.

Can I make the volumes visible and usable again. Thank you so much.

Posted on May 1, 2020 9:56 AM

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Answer 1

snckmrt Author

Level 1

6 points

May 5, 2020 6:41 PM in response to Loner T

Parallels didn't work because yo know the disk should be mounted on windows but i cannot mount it even on mac. So I'll take my chance in dual-boot and see what happens then.

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Answer 2

snckmrt Author

Level 1

6 points

May 2, 2020 4:35 PM in response to snckmrt

By the way, I witnessed a hopeful progress about my SSD. Among many others, only the iBoysoft Data Recovery software has been able to scan for lost apfs volumes and found approximately 200 gigabytes of data, which is organized the way i did. I mean not an ordinary recovery like pictures renamed as pic1, pic2; and documents renamed like doc1, doc2, etc, but everything stays as it was before the system crash. This means that we can also access the system. I use another ssd now to boot the system. Can i also boot from the other SSD if it is fixed?

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Answer 3

snckmrt Author

Level 1

6 points

May 3, 2020 9:40 AM in response to Loner T

Here is the outcome:

Last login: Sun May  3 19:39:37 on ttys000

Murats-MacBook-Pro:~ muratsenocak$ sudo fsck_apfs -n -l /dev/rdisk3

Password:

** Checking volume.

** Checking the container superblock.

** Checking the EFI jumpstart record.

error: (oid 0x1a599) cib: invalid o_cksum (0x0)

error: failed to read spaceman cib 0x1a599

** Checking the space manager.

   Space manager is invalid.

** The volume /dev/rdisk3 could not be verified completely.

Murats-MacBook-Pro:~ muratsenocak$

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How to Fix My SSD Partition with "Unknown Format"

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