GoFlex Segate 2TB HFS+ Journaled would not mount. The error I get:

sudo fsck_hfs -r -d /dev/disk1s1

journal_replay(/dev/disk1s1) returned 16

/dev/rdisk1s1

Using cacheBlockSize=32K cacheTotalBlock=98304 cacheSize=3145728K.

Executing fsck_hfs (version hfs-305.10.1).

could not get volume block 2, err 16

could not get alternate volume header at 409598, err 16

volumeType is 0

0000: 00a0 bd01 0100 0000 0000 0000 0000 0000 |................|

0010: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

. . .

01f0: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

unknown volume type

primary MDB is at block 0 0x00

alternate MDB is at block 0 0x00

primary VHB is at block 0 0x00

alternate VHB is at block 0 0x00

sector size = 512 0x200

VolumeObject flags = 0x01

total sectors for volume = 409600 0x64000

total sectors for embedded volume = 0 0x00

CheckForClean - unknown volume type

And

sudo gpt -r show disk1

gpt show: unable to open device 'disk1': Resource busy

diskutil verifyVolume disk1s2

Started file system verification on disk1s2

Verifying file system

File system check exit code is 8

Error: -69845: File system verify or repair failed

Underlying error: 8: POSIX reports: Exec format error

I am on OS X El Captain but I also have machine with the latest OSX and one with Lion. My mate was painting and he moved the drive and caused unsafe disconnect. Now First aid reports problems with Partition map.

Any ideas how to fix it via the terminal or in worst case scenario do you recommend to break the case and get one of those HDD docks and try to get my files back that way?