I have a 4TB Seagate Expansion Portable Drive with <1 TB data. It's HFS+, GUID Partition, encrypted with File Vault.
It was unplugged without disconnecting, and now the disk image does not mount. It appears in disk utility as so:
Running First Aid, we receive the following message:
We reboot in recovery mode, and run first aid again. It provides the same dialogue.
Here's the info from running diskutil info in terminal:
------------------ zachkrahmer$ diskutil info disk2 Device Identifier: disk2 Device Node: /dev/disk2 Whole: Yes Part of Whole: disk2 Device / Media Name: Expansion Volume Name: Not applicable (no file system) Mounted: Not applicable (no file system) File System: None Content (IOContent): GUID_partition_scheme OS Can Be Installed: No Media Type: Generic Protocol: USB SMART Status: Not Supported Disk Size: 4.0 TB (4000787029504 Bytes) (exactly 7814037167 512-Byte-Units) Device Block Size: 512 Bytes Read-Only Media: No Read-Only Volume: Not applicable (no file system) Device Location: External Removable Media: Fixed Virtual: No
Running the CS decryption command does not work, because the drive is not recognized as a CoreStorage Volume.
zachkrahmer$ diskutil cs list
No CoreStorage logical volume groups found
I tried mounting the drive, hoping that would prompt a log in request, and it only mounted a smaller (several hundred MB) EFI image.
It seems like the drive can't mount because it's locked, and it can't be unlocked because it can't mount.
It seems strange that unplugging a drive would cause "sudden death"like this.. Yes, I know it's a bad situation, and I've learned my lesson.
I'm asking for constructive advice. What else can I try, and if I reach the end of my options, could you recommend a data recovery center that specializes in corruption within FileVault encrypted drives? Many thanks.