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Could use your help recovering HFS+ external HDD that won't mount and has corrupted GPT table

0

I'm attempting to mount an Apple HFS/HFS+ formatted external HDD on my Ubuntu 18. box.The reason I'm attempting this is that my Mac wants to try to initialize the drive as though its blank. Attempts at using DiskUtility failed (cannot repair or verify). I am now running into a host of issues try to mount under linux. What I've tried:

sudo apt-get install hfsprogs -y

sudo mkdir /media/exthdd

sudo mount -t hfsplus -o force,rw /dev/sdb2 /media/exthdd

The above resulted in an error when trying to mount:

mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error.

When I attempted this:

sudo fsck.hfsplus /dev/sdb

I got that following:

Can't stat /dev/sdb1

Can't stat /dev/sdb1: No such file or directory

Here is the error and info I found using fdisk

 sudo fdisk -l

GPT PMBR size mismatch (4294967294 != 7814037164) will be corrected by w(rite).

The primary GPT table is corrupt, but the backup appears OK, so that will be used.

Disk /dev/sdb: 3.7 TiB, 4000787028480 bytes, 7814037165 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: gpt

Disk identifier: 0CC734C1-E271-4E6B-9B75-A18C548BCDB5



Device      Start        End    Sectors  Size Type

/dev/sdb1      40     409639     409600  200M EFI System

/dev/sdb2  409640 7813774983 7813365344  3.7T Apple HFS/HFS+

I could really use someone's help as I very much want to recover the data. I don't know what else to try. Thank you in advance.

mount data-recovery

share|improve this question

asked 12 mins ago

vsiegevsiege

12

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of Fixing corrupt backup GPT table?
  
  – Emmet
  3 mins ago
  

  
  
  
  

add a comment | 

0

I'm attempting to mount an Apple HFS/HFS+ formatted external HDD on my Ubuntu 18. box.The reason I'm attempting this is that my Mac wants to try to initialize the drive as though its blank. Attempts at using DiskUtility failed (cannot repair or verify). I am now running into a host of issues try to mount under linux. What I've tried:

sudo apt-get install hfsprogs -y

sudo mkdir /media/exthdd

sudo mount -t hfsplus -o force,rw /dev/sdb2 /media/exthdd

The above resulted in an error when trying to mount:

mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error.

When I attempted this:

sudo fsck.hfsplus /dev/sdb

I got that following:

Can't stat /dev/sdb1

Can't stat /dev/sdb1: No such file or directory

Here is the error and info I found using fdisk

 sudo fdisk -l

GPT PMBR size mismatch (4294967294 != 7814037164) will be corrected by w(rite).

The primary GPT table is corrupt, but the backup appears OK, so that will be used.

Disk /dev/sdb: 3.7 TiB, 4000787028480 bytes, 7814037165 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: gpt

Disk identifier: 0CC734C1-E271-4E6B-9B75-A18C548BCDB5



Device      Start        End    Sectors  Size Type

/dev/sdb1      40     409639     409600  200M EFI System

/dev/sdb2  409640 7813774983 7813365344  3.7T Apple HFS/HFS+

I could really use someone's help as I very much want to recover the data. I don't know what else to try. Thank you in advance.

mount data-recovery

share|improve this question

asked 12 mins ago

vsiegevsiege

12

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of Fixing corrupt backup GPT table?
  
  – Emmet
  3 mins ago
  

  
  
  
  

add a comment | 

I'm attempting to mount an Apple HFS/HFS+ formatted external HDD on my Ubuntu 18. box.The reason I'm attempting this is that my Mac wants to try to initialize the drive as though its blank. Attempts at using DiskUtility failed (cannot repair or verify). I am now running into a host of issues try to mount under linux. What I've tried:

sudo apt-get install hfsprogs -y

sudo mkdir /media/exthdd

sudo mount -t hfsplus -o force,rw /dev/sdb2 /media/exthdd

The above resulted in an error when trying to mount:

mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error.

When I attempted this:

sudo fsck.hfsplus /dev/sdb

I got that following:

Can't stat /dev/sdb1

Can't stat /dev/sdb1: No such file or directory

Here is the error and info I found using fdisk

 sudo fdisk -l

GPT PMBR size mismatch (4294967294 != 7814037164) will be corrected by w(rite).

The primary GPT table is corrupt, but the backup appears OK, so that will be used.

Disk /dev/sdb: 3.7 TiB, 4000787028480 bytes, 7814037165 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: gpt

Disk identifier: 0CC734C1-E271-4E6B-9B75-A18C548BCDB5



Device      Start        End    Sectors  Size Type

/dev/sdb1      40     409639     409600  200M EFI System

/dev/sdb2  409640 7813774983 7813365344  3.7T Apple HFS/HFS+

I could really use someone's help as I very much want to recover the data. I don't know what else to try. Thank you in advance.

mount data-recovery

share|improve this question

asked 12 mins ago

vsiegevsiege

12

sudo apt-get install hfsprogs -y

sudo mkdir /media/exthdd

sudo mount -t hfsplus -o force,rw /dev/sdb2 /media/exthdd

mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error.

sudo fsck.hfsplus /dev/sdb

Can't stat /dev/sdb1

Can't stat /dev/sdb1: No such file or directory

 sudo fdisk -l

GPT PMBR size mismatch (4294967294 != 7814037164) will be corrected by w(rite).

The primary GPT table is corrupt, but the backup appears OK, so that will be used.

Disk /dev/sdb: 3.7 TiB, 4000787028480 bytes, 7814037165 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: gpt

Disk identifier: 0CC734C1-E271-4E6B-9B75-A18C548BCDB5



Device      Start        End    Sectors  Size Type

/dev/sdb1      40     409639     409600  200M EFI System

/dev/sdb2  409640 7813774983 7813365344  3.7T Apple HFS/HFS+

share|improve this question

asked 12 mins ago

vsiegevsiege

12

share|improve this question

asked 12 mins ago

vsiegevsiege

12

asked 12 mins ago

vsiegevsiege

12

asked 12 mins ago

vsiegevsiege

12