OS X TestDisk Partition structure error

How to use TestDisk to recover lost partition
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zaggy
Posts: 10
Joined: 25 Mar 2012, 12:38

Re: OS X TestDisk Partition structure error

#11 Post by zaggy » 01 May 2012, 12:39

Any advice would be greatly appreciated, please.

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Fiona
Posts: 2839
Joined: 18 Feb 2012, 17:19
Location: Ludwigsburg/Stuttgart - Germany

Re: OS X TestDisk Partition structure error

#12 Post by Fiona » 01 May 2012, 13:07

I'm not as much an Apple tech savvy either.
But if you found your partition and it's in your GUID partition table, then it would be possible to try Advanced, your partition must be chosen and Superblock if avialable.
Would it be possible to upload a screenshot from the menu Advanced and if possible Superblock also.

Fiona

zaggy
Posts: 10
Joined: 25 Mar 2012, 12:38

Re: OS X TestDisk Partition structure error

#13 Post by zaggy » 07 May 2012, 19:31

Below are the screenshots from the Advanced menu:
Advancedmenu.png
Advancedmenu.png (19.6 KiB) Viewed 1981 times
SuperblocksInfo.png
Partitions 1&2 recovered OK. Partition 3 Failed
SuperblocksInfo.png (27.64 KiB) Viewed 1981 times
Partitions 1&2 recovered OK. But partition 3 Failed
Testdisk originally listed sector length of partition 3 inaccurately/too long(65513064). I changed this because partition is 31.16 GB which 65352416 matches.
I had also tried to recover with sector length 65513064 but that failed also.

Here is the log:
TestDisk 6.13, Data Recovery Utility, November 2011
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
OS: Darwin, kernel 9.8.0 (Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.
Compiler: GCC 4.0
Compilation date: 2011-11-15T08:36:43
ext2fs lib: 1.41.8, ntfs lib: libntfs-3g, reiserfs lib: 0.3.1-rc8, ewf lib: 20100226
User is not root!
Hard disk list
Disk /dev/disk1 - 250 GB / 232 GiB - CHS 488397168 1 1 (RO), sector size=512
Disk /dev/disk2 - 123 GB / 115 GiB - CHS 241254720 1 1 (RO), sector size=512
Disk /dev/rdisk1 - 250 GB / 232 GiB - CHS 488397168 1 1 (RO), sector size=512
Disk /dev/rdisk2 - 123 GB / 115 GiB - CHS 241254720 1 1 (RO), sector size=512

Partition table type (auto): EFI GPT
Media is opened in read-only.
Disk /dev/rdisk2 - 123 GB / 115 GiB (RO)
Partition table type: EFI GPT

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=241254719 (expected 241254719)
hdr_lba_start=34
hdr_lba_end=241254686
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
1 P Mac HFS 63 65529134 65529072
HFS+, 33 GB / 31 GiB
2 P Mac HFS 65529135 131042198 65513064
HFS+, 33 GB / 31 GiB
3 P Mac HFS 131042201 196394616 65352416
HFS+, 33 GB / 31 GiB

HFS_HFSP_boot_sector
1 P Mac HFS 63 65529134 65529072
HFS+, 33 GB / 31 GiB

HFS+ magic value at 63/0/1

HFS+ magic value at 63/0/1
Volume header
HFS+ OK

Backup volume header
HFS+ OK

Sectors are not identical.

HFS_HFSP_boot_sector
2 P Mac HFS 65529135 131042198 65513064
HFS+, 33 GB / 31 GiB

HFS+ magic value at 65529135/0/1

HFS+ magic value at 65529135/0/1
Volume header
HFS+ OK

Backup volume header
HFS+ OK

Sectors are not identical.

HFS_HFSP_boot_sector
3 P Mac HFS 131042201 196394616 65352416
HFS+, 33 GB / 31 GiB

HFS+ magic value at 131042201/0/1
Volume header
HFS+ OK

Backup volume header
Bad

Sectors are not identical.
gpt_change_part_type
Change partition type:
3 P FreeBSD 131042201 196394616 65352416
HFS+, 33 GB / 31 GiB
Change partition type:
3 P HFS+ 131042201 196394616 65352416
HFS+, 33 GB / 31 GiB

TestDisk exited normally.

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