Recovering corrupt encrypted partition

You can try another data recovery app just in case Easus is unable to handle this particular failure. Disk Drill and Stellar Data Recovery are two other options.

Otherwise you will need to contact a professional data recovery service to see if they can recover the data.

You could try using the command line to manually unlock the volume so that it is not automatically mounted after unlocking. Perhaps this would allow Disk Utility First Aid to scan the drive and the data recovery software to access the contents of the drive. The exact command depends on exact details of the external drive configuration & how it appears to macOS. I haven't tried doing this with an encrypted HFS+ volume (aka MacOS Extended (Journaled) volume....unfortunately it would be different from doing it for an APFS volume which I did not too long ago).

If the external drive has a hardware failure, then you need to be extremely careful since the more you attempt to access the drive, the worse the hardware failure will get.....where even a professional data recovery service will be unable to access any data on that drive. You usually only get one chance at recovering data from a failing drive, so choose wisely.

You should be able to recover the data from your backups. If you don't have backups, then now would be a good time to start some sort of backup regimen for the rest of your remaining data.

SealTeamVI wrote:

I connected my 4TB external hard drive this morning, which was journaled encrypted partition. As usual it asked me for the drive password. After I entered the password, the disk was automatically ejected. I wasn’t sure what was going on, so I checked disk utility and found that the drive is now showing a generic name and won’t mount. I tried doing first aid to the drive but it failed. I connected the external hard drive to another Mac and it showed the same thing. I tried recovering the partition with Easeus partition recovery, but it shows up as Lost Drive (exFAT). Could someone suggest me a way to properly recover that partition that Sequoia corrupted?

Sounds like the drive failed...