Deleted and expanded a partition by accident!

[hackernews]

I deleted and expanded a partition by accident, and I need help recovering the partitions that I lost.

I had a 1.5 TB external hard drive divided into three 500 GB partitions. Two of them were deleted to create a 1 TB and I'm trying to get them back. I tried to use testdisk to recover the partitions and I lost access to all of them in the process. I'll include screenshots below. It'd be great if I could get some guidance and please let me know if you need more information!

[cgrenier]

Have you tried "mount" in macOS Disk Utility ?

[hackernews]

Thanks for the reply! The mount button doesn't do anything and when I disconnect and connect the external hard drive, I get this

[hackernews]

I was able to see that most of the files are recoverable using disk recovery software but filenames and the directory structure is really important for me as you can imagine!

[hackernews]

Anyone?

[cgrenier]

What is the result of "sudo fsck /dev/disk2s2" ? If it fixes something, run it several times until everything is ok or nothing more can be fixed.
Try it for disk2s3 and disk2s4 too.