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How to fix CoreStorage not mounting? Broken GPT, GUID, volume etc?

I have an external hard drive with two partitions, each one formatted as "OS X Extended (Journaled, Encrypted)". The second partition mounts and asks for a password, but the first one does not. The ...
AGG's user avatar
  • 11
1 vote
0 answers
2k views

How can I *unlock* a CoreStorage volume that is not recognized?

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. ...
Zach's user avatar
  • 11
2 votes
2 answers
5k views

How can I *unlock* a CoreStorage logical-volume without mounting it?

I had a damaged disk that's encrypted with CoreStorage / FileVault. DiskWarrior was unable to operate on it while encrypted, obviously (“This is an offline, unavailable Core Storage disk.”); but the ...
ELLIOTTCABLE's user avatar
1 vote
1 answer
367 views

After Changing Partition Type From FFFF I Can't Boot

I originally asked the following question: Partition Type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF Macbook Pro about how to change my partition type from an unknown to a normal one, since it was ...
Thoughtyness's user avatar
2 votes
1 answer
13k views

How to mount Core Storage volume under Linux (or force conversion on unrevertible volume)?

I tried to mount HFS+ partition in Linux today, but I had problem with hfsplus: unable to find HFS+ superblock I've found later that this partition is in fact Core Storage container for the logical ...
Michał F's user avatar
  • 121