'Invalid catalog PEOF' error on First Aid attempt on M1 Mac

[earlyadopter]

12 TB external drive disappeared. On Disk Utility First Aid attempt getting the ‘Invalid catalog PEOF’ error.
M1 Max Macbook Pro with Monterey 12.2.1 installed.

Disk Warrior is not M1 compatible. Any suggestions on how to troubleshoot the disk? (it also had Time Machine files on it.)

[Jose2020]

When there is the “file system check exit code is 8”, it means there are some irreparable issues with your storage device. The following are the reasons behind the error message:

• Damaged or incompatible file system
• Logical issues such as incorrect system settings
• Outdated driver for the Mac storage drive
• Malware, virus, or other Internet errors
• Bad sectors or blocks on storage disk (HDD or SSD)

To fix the issue, you can try the below DIY solutions:

1. Repair drive using First Aid of Disk Utility
2. Repair drive using FSCK command
3. Recover data from the drive using data recovery software
4. Erase/Format the drive using Disk Utility

Further, you can also check the below link for more details:

Resolved ‘File system check exit code is 8’ Error on Mac

Hope it helps!