check_FAT: Unusual media descriptor (0xf0!=0xf8)

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irotema
Posts: 5
Joined: 04 Jul 2016, 12:51

check_FAT: Unusual media descriptor (0xf0!=0xf8)

#1 Post by irotema »

My 1 TB SSD hard drive got corrupted. What I had on it was a Mac OS X partition, and an Ubuntu partition (I unfortunately don't remember what where the sizes, but the Ubuntu partition was much smaller than the Mac OS X partition). I cannot boot from either one.

I am currently using testdisk to analyze the drive from a Windows Computer (I think it's going to take a few days to finish analyzing it - it has been running for more than 36 hours and it's only at 31% now), but so far it has displayed the following:

TestDisk 7.0, Data Recovery Utility, April 2015
Christophe GREENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org

Disk /dev/sdc - 1000 GB / 931 GiB - CHS 121601 255 63
Analyse cylinder 37937/121600: 31%_

check_FAT: 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 (HD)
EFI System 40 409639 409600 [EFI]
Unknown 80651805 1481733809692 1481653157888 [~FyM-5~]H
Unknown 522682625 30602498848 30079816224 [M-yM-$M-{^A

I am new to testdisk, so I am not sure if when it finishes this information above will be what the program will output, but I'm worried that it is giving me those warnings about the heads/cylinder and sectors, as well as the unusual media descriptor for check_FAT.

From the information above, I wouldn't know what to do with it.... are the two first columns of numbers the starting and end addresses, and the last column the size of a particular partition?...

Also... if I stop the analyse process... and I restart it again, would it start from the beginning again?... or would it begin where I stopped it?...

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cgrenier
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Re: check_FAT: Unusual media descriptor (0xf0!=0xf8)

#2 Post by cgrenier »

irotema wrote: From the information above, I wouldn't know what to do with it.... are the two first columns of numbers the starting and end addresses, and the last column the size of a particular partition?...
Yes
irotema wrote:Also... if I stop the analyse process... and I restart it again, would it start from the beginning again?... or would it begin where I stopped it?...
It will restart from the beginning.

Please post the testdisk.log file content when the search is finished.

irotema
Posts: 5
Joined: 04 Jul 2016, 12:51

Re: check_FAT: Unusual media descriptor (0xf0!=0xf8)

#3 Post by irotema »

Thank you Christophe for your reply...

The scanning of teh disk finally finished a few minutes ago. I am trying to post the testdisk.log file... but it's telling me that the extension of the file is invalid.

Any suggestion is greatly appreciated, since I wouldn't really know what to do.

Best regards,

Ivan

irotema
Posts: 5
Joined: 04 Jul 2016, 12:51

Re: check_FAT: Unusual media descriptor (0xf0!=0xf8)

#4 Post by irotema »

Here is a copy of the log I got... I truncated the file so that I could post it, but it just continues giving the same type of messages all the way to the end...

I mean these type of messages:

file_pread(6,1,buffer,1953525188(121601/81/21)) lseek err Invalid argument

Regards,

Ivan



Mon Jul 4 14:59:12 2016
Command line: TestDisk

TestDisk 7.0, Data Recovery Utility, April 2015
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
OS: Windows 8 (9200)
Compiler: GCC 4.8, Cygwin 1007.34
Compilation date: 2015-04-18T13:01:55
ext2fs lib: 1.42.8, ntfs lib: 10:0:0, reiserfs lib: 0.3.1-rc8, ewf lib: 20120504, curses lib: ncurses 5.9
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sda)=1000204886016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sdb)=500107862016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sdc)=1000204886016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive0)=1000204886016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive1)=500107862016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive2)=1000204886016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\C:)=999360279040
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\D:)=104857600
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\E:)=499264794624
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\F:)=241368563712
Hard disk list
Disk /dev/sda - 1000 GB / 931 GiB - CHS 121601 255 63, sector size=512
Disk /dev/sdb - 500 GB / 465 GiB - CHS 60801 255 63, sector size=512
Disk /dev/sdc - 1000 GB / 931 GiB - CHS 121601 255 63, sector size=512
Drive C: - 999 GB / 930 GiB - CHS 121498 255 63, sector size=512
Drive D: - 104 MB / 100 MiB - CHS 12 255 63, sector size=512
Drive E: - 499 GB / 464 GiB - CHS 60698 255 63, sector size=512
Drive F: - 241 GB / 224 GiB - CHS 29344 255 63, sector size=512

Partition table type (auto): EFI GPT
Disk /dev/sdc - 1000 GB / 931 GiB
Partition table type: EFI GPT

Analyse Disk /dev/sdc - 1000 GB / 931 GiB - CHS 121601 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525167 (expected 1953525167)
hdr_lba_start=34
hdr_lba_end=1953525134
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
Current partition structure:
1 P EFI System 40 409639 409600 [EFI System Partition]
2 P Unknown 409640 1462714095 1462304456 [MAC OS]
3 P Mac HFS 1462714096 1463983855 1269760 [Recovery HD]
4 P Mac HFS 1463983856 1465515535 1531680 [Apple_HFS_Untitled_2]
5 P MS Data 1465516032 1936939007 471422976
6 P Linux Swap 1936939008 1953523711 16584704

search_part()
Disk /dev/sdc - 1000 GB / 931 GiB - CHS 121601 255 63
FAT32 at 0/0/41
check_FAT: Unusual media descriptor (0xf0!=0xf8)
FAT1 : 32-3182
FAT2 : 3183-6333
start_rootdir : 6334 root cluster : 2
Data : 6334-409599
sectors : 409600
cluster_size : 1
no_of_cluster : 403266 (2 - 403267)
fat_length 3151 calculated 3151
heads/cylinder 16 (FAT) != 255 (HD)
sect/track 32 (FAT) != 63 (HD)

FAT32 at 0/0/41
EFI System 40 409639 409600 [EFI]
FAT32, blocksize=512, 209 MB / 200 MiB

SYSV4 Marker at 5020/87/25

recover_sysv4
Unknown 80651805 1481733809692 1481653157888 [†yµHâ]
SysV4, 758 TB / 689 TiB
Partition not added.

SYSV4 Marker at 32535/124/39

recover_sysv4
Unknown 522682625 30602498848 30079816224 [ù¤ìûÎ]
SysV4, 15 TB / 14 TiB
Partition not added.

SYSV4 Marker at 43642/145/3

recover_sysv4
Unknown 701117867 181000381019562 180999679901696 [2¥°Š07]
SysV4, 92671 TB / 84284 TiB
Partition not added.
Unknown 772717079 4068708323 3295991245
FATX, 1687 GB / 1571 GiB
Partition not added.

HFS+ magic value at 90970/182/45

HFS+ magic value at 90970/182/45
part_size 1269536
Mac HFS 1461444560 1462714095 1269536
HFS+ blocksize=4096 + Backup, 650 MB / 619 MiB

HFS+ magic value at 91049/189/5

HFS+ magic value at 91049/189/5
part_size 1269760
Mac HFS 1462714096 1463983855 1269760
HFS+ blocksize=4096 + Backup, 650 MB / 620 MiB

HFS+ magic value at 91128/198/63

HFS+ magic value at 91128/198/63
part_size 1531680
Mac HFS 1463983856 1465515535 1531680
HFS+ blocksize=4096 + Backup, 784 MB / 747 MiB
FAT32 at 91224/31/24
FAT1 : 48-55532
FAT2 : 55533-111017
start_rootdir : 111018 root cluster : 2
Data : 111018-454586089
sectors : 454586148
cluster_size : 64
no_of_cluster : 7101173 (2 - 7101174)
fat_length 55485 calculated 55478
FAT differs, FAT sectors=0-16/55485
sect/track 32 (FAT) != 63 (HD)
set_FAT_info: name from BS used

FAT32 at 91224/31/24
MS Data 1465515536 1920101683 454586148 [NO NAME]
FAT32, blocksize=32768, 232 GB / 216 GiB
Linux Swap 1936939000 1936939015 16
SWAP2 version 0, pagesize=8192, 8192 B
file_pread(6,1,buffer,1953525168(121601/81/1)) ReadFile Data error (cyclic redundancy check).

file_pread(6,1,buffer,1953525169(121601/81/2)) lseek err Invalid argument
file_pread(6,1,buffer,1953525170(121601/81/3)) lseek err Invalid argument
file_pread(6,1,buffer,1953525171(121601/81/4)) lseek err Invalid argument
file_pread(6,1,buffer,1953525172(121601/81/5)) lseek err Invalid argument
file_pread(6,1,buffer,1953525173(121601/81/6)) lseek err Invalid argument
file_pread(6,1,buffer,1953525174(121601/81/7)) lseek err Invalid argument
file_pread(6,1,buffer,1953525175(121601/81/8)) lseek err Invalid argument
file_pread(6,1,buffer,1953525176(121601/81/9)) lseek err Invalid argument
file_pread(6,1,buffer,1953525177(121601/81/10)) lseek err Invalid argument
file_pread(6,1,buffer,1953525178(121601/81/11)) lseek err Invalid argument
file_pread(6,1,buffer,1953525179(121601/81/12)) lseek err Invalid argument
file_pread(6,1,buffer,1953525180(121601/81/13)) lseek err Invalid argument
file_pread(6,1,buffer,1953525181(121601/81/14)) lseek err Invalid argument
file_pread(6,1,buffer,1953525182(121601/81/15)) lseek err Invalid argument
file_pread(6,1,buffer,1953525183(121601/81/16)) lseek err Invalid argument
file_pread(6,1,buffer,1953525184(121601/81/17)) lseek err Invalid argument
file_pread(6,1,buffer,1953525185(121601/81/18)) lseek err Invalid argument
file_pread(6,1,buffer,1953525186(121601/81/19)) lseek err Invalid argument
file_pread(6,1,buffer,1953525187(121601/81/20)) lseek err Invalid argument
file_pread(6,1,buffer,1953525188(121601/81/21)) lseek err Invalid argument
file_pread(6,1,buffer,1953525189(121601/81/22)) lseek err Invalid argument
file_pread(6,1,buffer,1953525190(121601/81/23)) lseek err Invalid argument
file_pread(6,1,buffer,1953525191(121601/81/24)) lseek err Invalid argument
file_pread(6,1,buffer,1953525192(121601/81/25)) lseek err Invalid argument
file_pread(6,1,buffer,1953525193(121601/81/26)) lseek err Invalid argument
file_pread(6,1,buffer,1953525194(121601/81/27)) lseek err Invalid argument
file_pread(6,1,buffer,1953525195(121601/81/28)) lseek err Invalid argument
file_pread(6,1,buffer,1953525196(121601/81/29)) lseek err Invalid argument
file_pread(6,1,buffer,1953525197(121601/81/30)) lseek err Invalid argument
file_pread(6,1,buffer,1953525198(121601/81/31)) lseek err Invalid argument
file_pread(6,1,buffer,1953525199(121601/81/32)) lseek err Invalid argument
file_pread(6,1,buffer,1953525200(121601/81/33)) lseek err Invalid argument
file_pread(6,1,buffer,1953525201(121601/81/34)) lseek err Invalid argument
file_pread(6,1,buffer,1953525202(121601/81/35)) lseek err Invalid argument

irotema
Posts: 5
Joined: 04 Jul 2016, 12:51

Re: check_FAT: Unusual media descriptor (0xf0!=0xf8)

#5 Post by irotema »

I decided to quit the program, and after it quit, there was more information appended into the log file... which is here:

I guess the log also shows things that I tried to do to see if I can get anything back... I'm really totally lost as to what to do from here and how to fix it...

Also... in case somebody suggests anything to try to fix it... would I need to run the analyze part of the program again?... it took 6 days to finish!...


file_pread(6,1,buffer,1953525304(121601/83/11)) lseek err Invalid argument
file_pread(6,1,buffer,1953527217(121601/113/34)) lseek err Invalid argument

Results
P EFI System 40 409639 409600 [EFI]
FAT32, blocksize=512, 209 MB / 200 MiB
P Mac HFS 1461444560 1462714095 1269536
HFS+ blocksize=4096 + Backup, 650 MB / 619 MiB
P Mac HFS 1462714096 1463983855 1269760
HFS+ blocksize=4096 + Backup, 650 MB / 620 MiB
P Mac HFS 1463983856 1465515535 1531680
HFS+ blocksize=4096 + Backup, 784 MB / 747 MiB
P MS Data 1465515536 1920101683 454586148 [NO NAME]
FAT32, blocksize=32768, 232 GB / 216 GiB
P Linux Swap 1936939000 1936939015 16
SWAP2 version 0, pagesize=8192, 8192 B

interface_write()
1 P EFI System 40 409639 409600 [EFI]
2 P Mac HFS 1461444560 1462714095 1269536
3 P Mac HFS 1462714096 1463983855 1269760
4 P Mac HFS 1463983856 1465515535 1531680
5 P MS Data 1465515536 1920101683 454586148 [NO NAME]
6 P Linux Swap 1936939000 1936939015 16
simulate write!

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525167 (expected 1953525167)
hdr_lba_start=34
hdr_lba_end=1953525134
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
1 P EFI System 40 409639 409600 [EFI System Partition]
2 P Unknown 409640 1462714095 1462304456 [MAC OS]
3 P Mac HFS 1462714096 1463983855 1269760 [Recovery HD]
HFS+ blocksize=4096 + Backup, 650 MB / 620 MiB
4 P Mac HFS 1463983856 1465515535 1531680 [Apple_HFS_Untitled_2]
HFS+ blocksize=4096 + Backup, 784 MB / 747 MiB
5 P MS Data 1465516032 1936939007 471422976
ext4 blocksize=4096 Large_file Sparse_SB, 241 GB / 224 GiB
6 P Linux Swap 1936939008 1953523711 16584704
Incomplete image created.

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525167 (expected 1953525167)
hdr_lba_start=34
hdr_lba_end=1953525134
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
1 P EFI System 40 409639 409600 [EFI System Partition]
2 P Unknown 409640 1462714095 1462304456 [MAC OS]
3 P Mac HFS 1462714096 1463983855 1269760 [Recovery HD]
HFS+ blocksize=4096 + Backup, 650 MB / 620 MiB
4 P Mac HFS 1463983856 1465515535 1531680 [Apple_HFS_Untitled_2]
HFS+ blocksize=4096 + Backup, 784 MB / 747 MiB
5 P MS Data 1465516032 1936939007 471422976
ext4 blocksize=4096 Large_file Sparse_SB, 241 GB / 224 GiB
6 P Linux Swap 1936939008 1953523711 16584704
Partition table type (auto): EFI GPT
Disk /dev/sdc - 1000 GB / 931 GiB
Partition table type: EFI GPT

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525167 (expected 1953525167)
hdr_lba_start=34
hdr_lba_end=1953525134
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
1 P EFI System 40 409639 409600 [EFI System Partition]
2 P Unknown 409640 1462714095 1462304456 [MAC OS]
3 P Mac HFS 1462714096 1463983855 1269760 [Recovery HD]
HFS+ blocksize=4096 + Backup, 650 MB / 620 MiB
4 P Mac HFS 1463983856 1465515535 1531680 [Apple_HFS_Untitled_2]
HFS+ blocksize=4096 + Backup, 784 MB / 747 MiB
5 P MS Data 1465516032 1936939007 471422976
ext4 blocksize=4096 Large_file Sparse_SB, 241 GB / 224 GiB
6 P Linux Swap 1936939008 1953523711 16584704


dir_partition inode=2
5 P MS Data 1465516032 1936939007 471422976
ext4 blocksize=4096 Large_file Sparse_SB, 241 GB / 224 GiB
Directory /
2 drwxr-xr-x 0 0 4096 19-Jun-2016 00:21 .
2 drwxr-xr-x 0 0 4096 19-Jun-2016 00:21 ..
11 drwx------ 0 0 16384 12-Dec-2013 13:59 lost+found
4194305 drwxr-xr-x 0 0 4096 19-Jun-2016 00:21 boot
10747905 drwxr-xr-x 0 0 12288 19-Jun-2016 11:49 etc
14286849 drwxr-xr-x 0 0 4096 3-Oct-2015 20:23 media
6160385 drwxr-xr-x 0 0 4096 22-Apr-2016 08:06 var
7995393 drwxr-xr-x 0 0 12288 19-Jun-2016 00:18 bin
917505 drwxr-xr-x 0 0 4096 20-Aug-2013 14:00 dev
10878977 drwxr-xr-x 0 0 4096 12-Dec-2013 14:03 home
3276801 drwxr-xr-x 0 0 4096 22-Apr-2016 08:25 lib
1179649 drwxr-xr-x 0 0 4096 22-Apr-2016 07:53 lib64
9175041 drwxr-xr-x 0 0 4096 22-Apr-2016 07:53 mnt
393217 drwxr-xr-x 0 0 4096 23-Sep-2015 16:52 opt
4718593 drwxr-xr-x 0 0 4096 19-Apr-2012 05:32 proc
11534337 drwx------ 0 0 4096 22-Apr-2016 08:28 root
4980737 drwxr-xr-x 0 0 4096 12-Dec-2013 14:04 run
5505025 drwxr-xr-x 0 0 12288 19-Jun-2016 00:20 sbin
16 lrwxrwxrwx 0 0 29 19-Jun-2016 00:21 vmlinuz
524289 drwxr-xr-x 0 0 4096 20-Aug-2013 13:56 srv
5898241 drwxr-xr-x 0 0 4096 14-Apr-2012 05:26 sys
5111809 drwxrwxrwt 0 0 12288 2-Jul-2016 18:04 tmp
655361 drwxr-xr-x 0 0 4096 6-Nov-2015 09:32 usr
13 lrwxrwxrwx 0 0 32 19-Jun-2016 00:21 initrd.img
9306113 drwxr-xr-x 0 0 4096 19-Apr-2016 10:31 snap
8126465 drwxr-xr-x 0 0 4096 12-Dec-2013 14:03 cdrom
14 lrwxrwxrwx 0 0 36 25-Mar-2014 18:13 libnss3.so
X 12 lrwxrwxrwx 0 0 29 27-May-2016 21:36 vmlinuz.5602
15 lrwxrwxrwx 0 0 32 27-May-2016 21:36 initrd.img.old
12 lrwxrwxrwx 0 0 29 27-May-2016 21:36 vmlinuz.old
New options :
Dump : No
Align partition: Yes
Expert mode : Yes
New options :
Dump : No
Align partition: Yes
Expert mode : Yes

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525167 (expected 1953525167)
hdr_lba_start=34
hdr_lba_end=1953525134
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
1 P EFI System 40 409639 409600 [EFI System Partition]
2 P Unknown 409640 1462714095 1462304456 [MAC OS]
3 P Mac HFS 1462714096 1463983855 1269760 [Recovery HD]
HFS+ blocksize=4096 + Backup, 650 MB / 620 MiB
4 P Mac HFS 1463983856 1465515535 1531680 [Apple_HFS_Untitled_2]
HFS+ blocksize=4096 + Backup, 784 MB / 747 MiB
5 P MS Data 1465516032 1936939007 471422976
ext4 blocksize=4096 Large_file Sparse_SB, 241 GB / 224 GiB
6 P Linux Swap 1936939008 1953523711 16584704
Incomplete image created.
gpt_change_part_type
Change partition type:
1 P EFI System 40 409639 409600 [EFI System Partition]
Change partition type:
1 P Unknown 40 409639 409600 [EFI System Partition]
New options :
Dump : No
Align partition: Yes
Expert mode : Yes

Analyse Disk /dev/sdc - 1000 GB / 931 GiB - CHS 121601 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525167 (expected 1953525167)
hdr_lba_start=34
hdr_lba_end=1953525134
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
Current partition structure:
1 P EFI System 40 409639 409600 [EFI System Partition]
2 P Unknown 409640 1462714095 1462304456 [MAC OS]
3 P Mac HFS 1462714096 1463983855 1269760 [Recovery HD]
4 P Mac HFS 1463983856 1465515535 1531680 [Apple_HFS_Untitled_2]
5 P MS Data 1465516032 1936939007 471422976
6 P Linux Swap 1936939008 1953523711 16584704

search_part()
Disk /dev/sdc - 1000 GB / 931 GiB - CHS 121601 255 63
FAT32 at 0/0/41
check_FAT: Unusual media descriptor (0xf0!=0xf8)
FAT1 : 32-3182
FAT2 : 3183-6333
start_rootdir : 6334 root cluster : 2
Data : 6334-409599
sectors : 409600
cluster_size : 1
no_of_cluster : 403266 (2 - 403267)
fat_length 3151 calculated 3151
heads/cylinder 16 (FAT) != 255 (HD)
sect/track 32 (FAT) != 63 (HD)

FAT32 at 0/0/41
EFI System 40 409639 409600 [EFI]
FAT32, blocksize=512, 209 MB / 200 MiB

HFS+ magic value at 91049/189/5

HFS+ magic value at 91049/189/5
part_size 1269760
Mac HFS 1462714096 1463983855 1269760
HFS+ blocksize=4096 + Backup, 650 MB / 620 MiB

HFS+ magic value at 91128/198/63

HFS+ magic value at 91128/198/63
part_size 1531680
Mac HFS 1463983856 1465515535 1531680
HFS+ blocksize=4096 + Backup, 784 MB / 747 MiB
Search for partition aborted

Results
P EFI System 40 409639 409600 [EFI]
FAT32, blocksize=512, 209 MB / 200 MiB
P Mac HFS 1462714096 1463983855 1269760
HFS+ blocksize=4096 + Backup, 650 MB / 620 MiB
P Mac HFS 1463983856 1465515535 1531680
HFS+ blocksize=4096 + Backup, 784 MB / 747 MiB

interface_write()
1 P EFI System 40 409639 409600 [EFI]
2 P Mac HFS 1462714096 1463983855 1269760
3 P Mac HFS 1463983856 1465515535 1531680
simulate write!

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525167 (expected 1953525167)
hdr_lba_start=34
hdr_lba_end=1953525134
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
1 P EFI System 40 409639 409600 [EFI System Partition]
2 P Unknown 409640 1462714095 1462304456 [MAC OS]
3 P Mac HFS 1462714096 1463983855 1269760 [Recovery HD]
HFS+ blocksize=4096 + Backup, 650 MB / 620 MiB
4 P Mac HFS 1463983856 1465515535 1531680 [Apple_HFS_Untitled_2]
HFS+ blocksize=4096 + Backup, 784 MB / 747 MiB
5 P MS Data 1465516032 1936939007 471422976
ext4 blocksize=4096 Large_file Sparse_SB, 241 GB / 224 GiB
6 P Linux Swap 1936939008 1953523711 16584704

TestDisk exited normally.

Locked