How to determine correct boundaries, type and block size

How to use TestDisk to recover lost partition
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Author
lemst
Posts: 1
Joined: 06 Apr 2016, 22:10

How to determine correct boundaries, type and block size

#1 Post by lemst » 07 Apr 2016, 07:32

Hi!

Really appreciate your help!
I have been trying to recover the partition of the external HDD (1TB) formatted by mistake (wrong disk chosen) as HFS+ with Journal on OSX. Not 100% sure if the previous partition was NTFS or HFS+ (but more likely formatted for Mac).

Desperate times... another person tried carving the files (using a bunch of techniques) but most of the large files & videos were corrupt due to fragmentation.

Sadly (learned the hard way, don't know how much damage was done logically; the disk is ok physically), created an image of the original disk until this point to use it instead.

Then tried the steps to recover reformatted partitions (http://www.cgsecurity.org/wiki/Data_Rec ... _partition) but got different options in TestDisk (SuperBlock instead of BackupBS and RebuildBS, etc). Tried copying the backup superblock, but did not work either.

Tried the step by step guide (http://www.cgsecurity.org/wiki/TestDisk_Step_By_Step) but the search and deep search displayed errors and several overlapping/overflowing HFS+ partitions that didn't list the files (p/list files option not available).

... some errors ...
unusual media descriptor (0xf0 =0xf8)
Warning: number of heads/cylinder mismatches 16 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 32 (FAT) != (63)
The hard disk (1000 GB / 931GiB) seems too small! (( 2000 GB / 1863 GiB)
Check the hard disk size: HD jumpers settings, BIOS detection...
The following partition can´t be recovered...
... and others ...

In some forums it mentions to force create a partition using the correct boundaries and type of the original partition, then delete the others.

How to determine the correct start/end points and partition type, hdd/filesystem block size (512, 1024, 4096...), geometry, etc. from the several found?

What steps are required to recover the partition (or at least working files comprising all fragments)?

Thank you in advance for your help!

---------------------------------
Here is the log for your perusal:

Code: Select all

TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
OS: Linux, kernel 3.13.0-24-generic (#46-Ubuntu SMP Thu Apr 10 19:08:14 UTC 2014) i686
Compiler: GCC 4.8
Compilation date: 2013-10-29T01:29:29
ext2fs lib: 1.42.9, ntfs lib: libntfs-3g, reiserfs lib: none, ewf lib: none
Hard disk list
Disk /media/mint/fixme/image/image1.dd - 1000 GB / 931 GiB - CHS 121602 255 63, sector size=512

Partition table type (auto): EFI GPT
Disk /media/mint/fixme/image/image1.dd - 1000 GB / 931 GiB
Partition table type: EFI GPT

Interface Advanced
 1 P EFI System                    40     409639     409600 [EFI System Partition]
 2 P Mac HFS                   409640 1953262983 1952853344 [Toshiba 1TB]
     HFS+ blocksize=4096, 999 GB / 931 GiB

Analyse Disk /media/mint/fixme/image/image1.dd - 1000 GB / 931 GiB - CHS 121602 255 63
Current partition structure:
 1 P EFI System                    40     409639     409600 [EFI System Partition]
 2 P Mac HFS                   409640 1953262983 1952853344 [Toshiba 1TB]

search_part()
Disk /media/mint/fixme/image/image1.dd - 1000 GB / 931 GiB - CHS 121602 255 63
check_FAT: Unusual media descriptor (0xf0!=0xf8)
heads/cylinder 16 (FAT) != 255 (HD)
sect/track 32 (FAT) != 63 (HD)
     EFI System                    40     409639     409600 [EFI]
     FAT32, blocksize=512, 209 MB / 200 MiB
     Mac HFS                   409640 1953262983 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     MS Data                       64 1953520064 1953520001 [SAMSUNG]
     NTFS found using backup sector, blocksize=4096, 1000 GB / 931 GiB
NTFS: Can't read MFT
     MS Data               1953520064 3907040064 1953520001
     NTFS, blocksize=4096, 1000 GB / 931 GiB
This partition ends after the disk limits.
Disk /media/mint/fixme/image/image1.dd - 1000 GB / 931 GiB - CHS 121602 255 63
Check the harddisk size: HD jumpers settings, BIOS detection...
The harddisk (1000 GB / 931 GiB) seems too small! (< 2000 GB / 1863 GiB)
The following partition can't be recovered:
     MS Data               1953520064 3907040064 1953520001
     NTFS, blocksize=4096, 1000 GB / 931 GiB

interface_write()
 
No partition found or selected for recovery

search_part()
Disk /media/mint/fixme/image/image1.dd - 1000 GB / 931 GiB - CHS 121602 255 63
check_FAT: Unusual media descriptor (0xf0!=0xf8)
heads/cylinder 16 (FAT) != 255 (HD)
sect/track 32 (FAT) != 63 (HD)
     EFI System                    40     409639     409600 [EFI]
     FAT32, blocksize=512, 209 MB / 200 MiB
check_FAT: Unusual media descriptor (0xf0!=0xf8)
heads/cylinder 16 (FAT) != 255 (HD)
sect/track 32 (FAT) != 63 (HD)
set_FAT_info: name from BS used
     EFI System                    46     409645     409600 [EFI]
     FAT32, blocksize=512, 209 MB / 200 MiB
     Mac HFS                   409640 1953262983 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   469351 1953322694 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   469472 1953322815 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   469657 1953323000 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   469762 1953323105 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   469843 1953323186 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   469932 1953323275 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   470093 1953323436 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   470254 1953323597 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   470415 1953323758 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   470600 1953323943 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   470745 1953324088 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   470850 1953324193 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   470955 1953324298 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   471052 1953324395 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   471213 1953324556 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   471406 1953324749 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   471535 1953324878 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   471624 1953324967 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   471833 1953325176 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   472010 1953325353 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   472123 1953325466 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   472228 1953325571 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   472333 1953325676 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   472462 1953325805 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   472575 1953325918 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   472672 1953326015 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   472809 1953326152 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   472874 1953326217 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   473131 1953326474 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   473212 1953326555 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   473389 1953326732 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   473526 1953326869 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   473687 1953327030 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   473824 1953327167 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   473953 1953327296 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   474098 1953327441 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   474187 1953327530 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   474292 1953327635 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   474397 1953327740 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   474502 1953327845 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   474679 1953328022 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   475000 1953328343 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   475193 1953328536 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   475354 1953328697 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   475443 1953328786 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   475620 1953328963 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   475869 1953329212 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   476014 1953329357 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   476135 1953329478 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   476240 1953329583 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   476401 1953329744 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   476466 1953329809 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   476675 1953330018 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   476780 1953330123 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   476885 1953330228 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   477014 1953330357 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   477159 1953330502 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   477272 1953330615 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   477377 1953330720 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   477482 1953330825 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   477587 1953330930 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   477772 1953331115 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   477861 1953331204 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   477950 1953331293 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   478151 1953331494 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   478360 1953331703 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   478449 1953331792 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   478578 1953331921 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   478707 1953332050 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   478900 1953332243 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   479173 1953332516 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   479310 1953332653 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   479535 1953332878 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   479688 1953333031 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   479841 1953333184 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   479930 1953333273 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   480067 1953333410 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   480204 1953333547 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   480381 1953333724 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   480526 1953333869 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   480655 1953333998 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   480744 1953334087 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   480865 1953334208 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   480970 1953334313 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   481139 1953334482 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   481228 1953334571 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   481397 1953334740 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   481702 1953335045 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   481935 1953335278 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   482056 1953335399 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   482185 1953335528 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   482506 1953335849 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   482891 1953336234 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   483100 1953336443 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   484925 1953338268 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   485118 1953338461 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   485247 1953338590 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   485528 1953338871 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   485705 1953339048 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   485874 1953339217 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   486411 1953339754 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   486876 1953340219 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   487093 1953340436 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   487246 1953340589 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   487623 1953340966 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   487792 1953341135 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   488081 1953341424 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   488210 1953341553 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   488691 1953342034 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   488884 1953342227 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   489133 1953342476 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   489326 1953342669 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   489551 1953342894 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   489616 1953342959 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   489929 1953343272 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   490034 1953343377 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   490283 1953343626 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   490404 1953343747 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   490597 1953343940 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   490870 1953344213 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   491103 1953344446 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   491400 1953344743 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   491633 1953344976 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   491914 1953345257 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   492595 1953345938 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   493244 1953346587 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   493469 1953346812 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   493686 1953347029 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   494127 1953347470 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   494496 1953347839 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Mac HFS                   494817 1953348160 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     Unknown                296781113 32959413678920636 32959413382139523
     VMFS 2011747104, 16875219 TB / 15347922 TiB
     Unknown                335261677 35353756738075693 35353756402814016
     VMFS 3144797579, 18101123 TB / 16462875 TiB
     Unknown                577144932 18278326738868811 18278326161723879
     VMFS 1694124938, 9358502 TB / 8511508 TiB
check_FAT: Bad jump in FAT partition
     Unknown                807988547 35707753277846624 35707752469858077
     VMFS 3813453829, 18282369 TB / 16627717 TiB
     Unknown               1689709080 34648234088568555 34648232398859475
     VMFS 3969253246, 17739894 TB / 16134340 TiB
     Unknown               1719303096 22441034042211255 22441032322908160
     WBFS, 11489808 TB / 10449920 TiB
     Mac HFS               1953262980 3906116323 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
This partition ends after the disk limits.
     Mac HFS                   409640 1953262983 1952853344
     HFS+ found using backup sector!, 999 GB / 931 GiB
     MS Data                       64 1953520064 1953520001 [SAMSUNG]
     NTFS found using backup sector, blocksize=4096, 1000 GB / 931 GiB
NTFS: Can't read MFT
     MS Data               1953520064 3907040064 1953520001
     NTFS, blocksize=4096, 1000 GB / 931 GiB
This partition ends after the disk limits.
Disk /media/mint/fixme/image/image1.dd - 1000 GB / 931 GiB - CHS 121602 255 63
Check the harddisk size: HD jumpers settings, BIOS detection...
The harddisk (1000 GB / 931 GiB) seems too small! (< 2000 GB / 1863 GiB)
The following partitions can't be recovered:
     Mac HFS               1953262980 3906116323 1952853344
     HFS+ blocksize=4096, 999 GB / 931 GiB
     MS Data               1953520064 3907040064 1953520001
     NTFS, blocksize=4096, 1000 GB / 931 GiB

interface_write()
 
No partition found or selected for recovery
simulate write!

Interface Advanced
 1 P EFI System                    40     409639     409600 [EFI System Partition]
 2 P Mac HFS                   409640 1953262983 1952853344 [Toshiba 1TB]
     HFS+ blocksize=4096, 999 GB / 931 GiB

HFS_HFSP_boot_sector
 2 P Mac HFS                   409640 1953262983 1952853344 [Toshiba 1TB]
     HFS+ blocksize=4096, 999 GB / 931 GiB
Volume header
HFS+ OK

Backup volume header
HFS+ OK

Sectors are not identical.
Superblock                        Backup superblock
0000 482b0004 80002100   H+....!.  482b0004 80002100   H+....!.
0008 4846534a 00001d1b   HFSJ....  31302e30 00001d1b   10.0....
0010 d25a10d5 d3017422   .Z....t"  d25a10d5 d25a6535   .Z...Ze5
0018 00000000 d25a6535   .....Ze5  00000000 d25a6535   .....Ze5
0020 0000004f 00000014   ...O....  00000002 00000000   ........
0028 00001000 0e8cc5ac   ........  00001000 0e8cc5ac   ........
0030 0e8a4c9f 001d8002   ..L.....  0e8a4d8f 0018781c   ..M...x.
0038 00010000 00010000   ........  00010000 00010000   ........
0040 000000f6 000002bc   ........  00000012 00000000   ........
0048 00000000 00000001   ........  00000000 00000001   ........
0050 00000000 00000000   ........  00000000 00000000   ........
0058 00000000 00000000   ........  00000000 00000000   ........
0060 00000000 00000000   ........  00000000 00000000   ........
0068 35a7b76a 50919725   5..jP..%  35a7b76a 50919725   5..jP..%
0070 00000000 01d1a000   ........  00000000 01d1a000   ........
0078 01d1a000 00001d1a   ........  01d1a000 00001d1a   ........
0080 00000001 00001d1a   ........  00000001 00001d1a   ........
0088 00000000 00000000   ........  00000000 00000000   ........
0090 00000000 00000000   ........  00000000 00000000   ........
0098 00000000 00000000   ........  00000000 00000000   ........
00A0 00000000 00000000   ........  00000000 00000000   ........
00A8 00000000 00000000   ........  00000000 00000000   ........
00B0 00000000 00000000   ........  00000000 00000000   ........
00B8 00000000 00000000   ........  00000000 00000000   ........
00C0 00000000 00b00000   ........  00000000 00b00000   ........
00C8 00b00000 00000b00   ........  00b00000 00000b00   ........
00D0 00006d1c 00000b00   ..m.....  00006d1c 00000b00   ..m.....
00D8 00000000 00000000   ........  00000000 00000000   ........
00E0 00000000 00000000   ........  00000000 00000000   ........
00E8 00000000 00000000   ........  00000000 00000000   ........
00F0 00000000 00000000   ........  00000000 00000000   ........
00F8 00000000 00000000   ........  00000000 00000000   ........
0100 00000000 00000000   ........  00000000 00000000   ........
0108 00000000 00000000   ........  00000000 00000000   ........
0110 00000000 10000000   ........  00000000 10000000   ........
0118 10000000 00010000   ........  10000000 00010000   ........
0120 000b781c 00010000   ..x.....  000b781c 00010000   ..x.....
0128 00000000 00000000   ........  00000000 00000000   ........
0130 00000000 00000000   ........  00000000 00000000   ........
0138 00000000 00000000   ........  00000000 00000000   ........
0140 00000000 00000000   ........  00000000 00000000   ........
0148 00000000 00000000   ........  00000000 00000000   ........
0150 00000000 00000000   ........  00000000 00000000   ........
0158 00000000 00000000   ........  00000000 00000000   ........
0160 00000000 10000000   ........  00000000 10000000   ........
0168 10000000 00010000   ........  10000000 00010000   ........
0170 0000781c 00010000   ..x.....  0000781c 00010000   ..x.....
0178 00000000 00000000   ........  00000000 00000000   ........
0180 00000000 00000000   ........  00000000 00000000   ........
0188 00000000 00000000   ........  00000000 00000000   ........
0190 00000000 00000000   ........  00000000 00000000   ........
0198 00000000 00000000   ........  00000000 00000000   ........
01A0 00000000 00000000   ........  00000000 00000000   ........
01A8 00000000 00000000   ........  00000000 00000000   ........
01B0 00000000 00000000   ........  00000000 00000000   ........
01B8 00000000 00000000   ........  00000000 00000000   ........
01C0 00000000 00000000   ........  00000000 00000000   ........
01C8 00000000 00000000   ........  00000000 00000000   ........
01D0 00000000 00000000   ........  00000000 00000000   ........
01D8 00000000 00000000   ........  00000000 00000000   ........
01E0 00000000 00000000   ........  00000000 00000000   ........
01E8 00000000 00000000   ........  00000000 00000000   ........
01F0 00000000 00000000   ........  00000000 00000000   ........
01F8 00000000 00000000   ........  00000000 00000000   ........
gpt_change_part_type
Change partition type:
 2 P Mac HFS                   409640 1953262983 1952853344 [Toshiba 1TB]
     HFS+ blocksize=4096, 999 GB / 931 GiB
Change partition type:
 2 P HFS+                      409640 1953262983 1952853344 [Toshiba 1TB]
     HFS+ blocksize=4096, 999 GB / 931 GiB
New options :
 Dump : No
 Align partition: Yes
 Expert mode : No

TestDisk exited normally.

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cgrenier
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Re: How to determine correct boundaries, type and block size

#2 Post by cgrenier » 07 Apr 2016, 20:11

Use TestDisk 7.1-WIP instead of an older version.
The best HFS+ partition candidate are listed with "HFS+ blocksize=4096 + Backup" (last line of the screen)

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