Recovery HFS partition table

Sun, 25 Mar 2012 15:48:13 +0000

First think, scan your damage disk with a tool like “testdisk” (http://www.cgsecurity.org/wiki/TestDisk) look for lost partitions, unfortunately HFS is not fully supported by this great tool, then you need to use pdisk or other partition software.

 Disk /dev/rdisk3 - 1000 GB / 931 GiB - CHS 121601 255 63
 Partition Start End Size in sectors
 >P HFS 262208 1953525151 1953262944

In my case, I’ve used pdisk directly on OS X:

 leobook4-w:~ root# pdisk /dev/rdisk3
 pdisk: No valid block 1 on '/dev/rdisk3'
 Edit /dev/rdisk3 -
 Command (? for help): i
 A physical block is 512 bytes:
 A logical block is 512 bytes:
 size of 'device' is 1953525168 blocks (512 byte blocks):
 new size of 'device' is 1953525168 blocks (512 byte blocks)
 Command (? for help): c
 First block: 262208
 Length in blocks: 1953262944
 Name of partition: recover\_leo
 Command (? for help): w
 Writing the map destroys what was there before. Is that okay? \[n/y\]: y
 The partition table has been altered!

 Command (? for help): q

Lost on Details...

Recovery HFS partition table