Actualmente estoy sufriendo bajo mi recién comprado HDD de 6TB.
Lo saqué de manera segura ayer y cuando lo volví a enchufar, no pasó nada. Luego verifiqué DiskUtility pero me presentaron algo extraño: 
Como casi todo lo importante para mí reside en este disco ahora, realmente no sé si podría recuperarme de esta pérdida.
Estoy en 10.12.5, ejecutándome en una MacBook Pro a finales de '13, si eso es incluso importante. Bien, busqué algunas cosas para hacer después de eso:
Salida de diskutil list :
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *251.0 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage Macintosh HD 222.1 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data BOOTCAMP 28.0 GB disk0s4
/dev/disk1 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD +221.8 GB disk1
Logical Volume on disk0s2
D1E19399-BC6F-4E9F-ADA5-D082A16EC2A3
Unlocked Encrypted
/dev/disk2 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *6.0 TB disk2
1: EFI EFI 314.6 MB disk2s1
2: Apple_CoreStorage MC-7 6.0 TB disk2s2
3: Apple_Boot Boot OS X 134.2 MB disk2s3
Salida de diskutil cs list :
CoreStorage logical volume groups (2 found)
|
+-- Logical Volume Group E7AF9022-948A-415E-9B5E-F288DD70F8E5
| =========================================================
| Name: Macintosh HD
| Status: Online
| Size: 222140432384 B (222.1 GB)
| Free Space: 0 B (0 B)
| |
| +-< Physical Volume 02D8A677-06DE-41ED-B936-DB70E2FE3656
| | ----------------------------------------------------
| | Index: 0
| | Disk: disk0s2
| | Status: Online
| | Size: 222140432384 B (222.1 GB)
| |
| +-> Logical Volume Family 5FFE6896-66C8-4E27-9B47-75900D365736
| ----------------------------------------------------------
| Encryption Type: AES-XTS
| Encryption Status: Unlocked
| Conversion Status: Complete
| High Level Queries: Fully Secure
| | Passphrase Required
| | Accepts New Users
| | Has Visible Users
| | Has Volume Key
| |
| +-> Logical Volume D1E19399-BC6F-4E9F-ADA5-D082A16EC2A3
| ---------------------------------------------------
| Disk: disk1
| Status: Online
| Size (Total): 221803835392 B (221.8 GB)
| Revertible: No
| LV Name: Macintosh HD
| Volume Name: Macintosh HD
| Content Hint: Apple_HFS
|
+-- Logical Volume Group 20344557-B1E9-4CEE-8472-28FA39379F4C
=========================================================
Name: MC-7
Status: Offline
Size: 0 B (0 B)
Free Space: -none-
|
+-< Physical Volume 4F2A854E-9B63-49EC-A47D-14FBD768C226
----------------------------------------------------
Index: 0
Disk: disk2s2
Status: Checking
Size: 6000726290432 B (6.0 TB)
Salida de diskutil repairdisk disk2 :
Started partition map repair on disk2
Checking prerequisites
Checking the partition list
Adjusting partition map to fit whole disk as required
Checking for an EFI system partition
Checking the EFI system partition's size
Checking the EFI system partition's file system
Checking the EFI system partition's folder content
Checking all HFS data partition loader spaces
Checking booter partitions
Checking booter partition disk2s3
Verifying file system
Checking Journaled HFS Plus volume
Checking extents overflow file
Checking catalog file
Checking multi-linked files
Checking catalog hierarchy
Checking extended attributes file
Checking volume bitmap
Checking volume information
The volume Boot OS X appears to be OK
File system check exit code is 0
Reviewing boot support loaders
Checking Core Storage Physical Volume partitions
Verifying storage system
Checking volume
disk2s2: Scan for Volume Headers
disk2s2: Scan for Disk Labels
Invalid Disk Label @ 4096: invalid field value
Invalid Disk Label @ 4198400: invalid field value
Logical Volume Group 20344557-B1E9-4CEE-8472-28FA39379F4C on 1 device
disk2s2: Scan for Metadata Volume
Logical Volume Group has a 24 MB Metadata Volume with double redundancy
Start scanning metadata for a valid checkpoint
Load and verify Segment Headers
Unable to bootstrap transaction group 5: cksum mismatch
Continue scanning metadata for an older checkpoint
Load and verify Segment Headers
Unable to bootstrap transaction group 4: cksum mismatch
No valid commit checkpoint found
The volume 20344557-B1E9-4CEE-8472-28FA39379F4C was found corrupt and needs to be repaired
Storage system check exit code is 1
Repairing storage system
Checking volume
disk2s2: Scan for Volume Headers
disk2s2: Scan for Disk Labels
Invalid Disk Label @ 4096: invalid field value
Invalid Disk Label @ 4198400: invalid field value
Logical Volume Group 20344557-B1E9-4CEE-8472-28FA39379F4C on 1 device
disk2s2: Scan for Metadata Volume
Logical Volume Group has a 24 MB Metadata Volume with double redundancy
Start scanning metadata for a valid checkpoint
Load and verify Segment Headers
Unable to bootstrap transaction group 5: cksum mismatch
Continue scanning metadata for an older checkpoint
Load and verify Segment Headers
Unable to bootstrap transaction group 4: cksum mismatch
No valid commit checkpoint found
The volume 20344557-B1E9-4CEE-8472-28FA39379F4C was found corrupt and can not be repaired
Storage system check exit code is 1
Repairing storage system
The volume disk2s2+disk0s2 cannot be repaired when it is in use
Checking volume
disk2s2: Scan for Volume Headers
disk0s2: Scan for Volume Headers
disk2s2: Scan for Disk Labels
Invalid Disk Label @ 4096: invalid field value
Invalid Disk Label @ 4198400: invalid field value
disk0s2: Scan for Disk Labels
Logical Volume Group E7AF9022-948A-415E-9B5E-F288DD70F8E5 on 1 device
Incomplete or inconsistent CoreStorage Physical Volume set
Storage system check exit code is 1
Problems were encountered during repair of the partition map
Error: -69716: Storage system verify or repair failed
Underlying error: 1: Operation not permitted
Salida de sudo gpt -r show disk2 :
start size index contents
0 1 PMBR
1 1 Pri GPT header
2 4 Pri GPT table
6 76800 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
76806 1465021067 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
1465097873 32768 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
1465130641 4 Sec GPT table
1465130645 1 Sec GPT header
Dice Invalid Disk Label @ #: invalid field value , ese es el primer error que puedo detectar. Intenté fsck_hfs también, pero obtuve más o menos los mismos resultados.
Estoy muy deprimido, no sé qué hacer ...
Editar : la unidad en cuestión está cifrada.
Edit 2 : pude recuperar partes de algunos archivos importantes (~ 1GB de ~ 250GB) usando una herramienta de recuperación (en particular, “Data Rescue 4”) en una unidad que tenía Los archivos antes de moverlos. Supongo que vale la pena intentarlo si tienes un problema así, aunque no obtendrás muchos resultados (pero al menos algunos). Gracias por la ayuda aunque Dejo el disco como está en caso de que alguien encuentre una solución.