No partition found

Using TestDisk to repair the filesystem
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Hartmut
Posts: 2
Joined: 01 Mar 2016, 10:12

No partition found

#1 Post by Hartmut » 07 Mar 2016, 22:39

Hi,

my USB stick (4 GB) with important data is not working anymore.
Scanning does not find anything - first it says no endmark and deep scanning delivers nothing either.

Then I tried RebuildBS after having chosen none as format at the beginning. For all types (Fat32, ..), this is not succesful (Message: Can't find cluster size).

In the log file (see below), an I/O error is also reported.

Apart from that, I have tried numerous data recovery tools, but they all find nothing.
Is there anything else I can try or do I have to consider that stick as lost?

Thank you and kind regards,
Hartmut


TestDisk 7.0, Data Recovery Utility, April 2015
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
OS: Windows 7 (7601) SP1
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)=320072933376
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sdb)=4022337024
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive0)=320072933376
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive1)=4022337024
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\C:)=68306337792
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\D:)=251657191424
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\E:)=4022337024
Hard disk list
Disk /dev/sda - 320 GB / 298 GiB - CHS 38913 255 63, sector size=512
Disk /dev/sdb - 4022 MB / 3835 MiB - CHS 489 255 63, sector size=512
Drive C: - 68 GB / 63 GiB - CHS 8304 255 63, sector size=512
Drive D: - 251 GB / 234 GiB - CHS 30595 255 63, sector size=512

Partition table type default to Intel
Disk /dev/sdb - 4022 MB / 3835 MiB
Partition table type: Intel

Analyse Disk /dev/sdb - 4022 MB / 3835 MiB - CHS 489 255 63
Current partition structure:

Partition sector doesn't have the endmark 0xAA55

search_part()
Disk /dev/sdb - 4022 MB / 3835 MiB - CHS 489 255 63
file_pread(5,2,buffer,7856128(489/5/29)) lseek err Invalid argument
file_pread(5,1,buffer,7856128(489/5/29)) lseek err Invalid argument
file_pread(5,2,buffer,7857832(489/32/32)) lseek err Invalid argument
file_pread(5,1,buffer,7857832(489/32/32)) lseek err Invalid argument
file_pread(5,2,buffer,7857833(489/32/33)) lseek err Invalid argument
file_pread(5,2,buffer,7857896(489/33/33)) lseek err Invalid argument
file_pread(5,1,buffer,7857896(489/33/33)) lseek err Invalid argument
file_pread(5,1,buffer,7856127(489/5/28)) ReadFile Die Anforderung konnte wegen eines E/A-Gerätefehlers nicht ausgeführt werden.

file_pread(5,14,buffer,7856129(489/5/30)) lseek err Invalid argument
file_pread(5,3,buffer,7856143(489/5/44)) lseek err Invalid argument
file_pread(5,3,buffer,7856190(489/6/28)) lseek err Invalid argument
file_pread(5,8,buffer,7856206(489/6/44)) lseek err Invalid argument
file_pread(5,11,buffer,7856253(489/7/28)) lseek err Invalid argument
file_pread(5,2,buffer,7858175(489/37/60)) lseek err Invalid argument

Results

interface_write()

No partition found or selected for recovery

search_part()
Disk /dev/sdb - 4022 MB / 3835 MiB - CHS 489 255 63
file_pread(5,2,buffer,7856128(489/5/29)) lseek err Invalid argument
file_pread(5,1,buffer,7856128(489/5/29)) lseek err Invalid argument
file_pread(5,2,buffer,7857832(489/32/32)) lseek err Invalid argument
file_pread(5,1,buffer,7857832(489/32/32)) lseek err Invalid argument
file_pread(5,2,buffer,7857833(489/32/33)) lseek err Invalid argument
file_pread(5,2,buffer,7857896(489/33/33)) lseek err Invalid argument
file_pread(5,1,buffer,7857896(489/33/33)) lseek err Invalid argument
file_pread(5,1,buffer,7856127(489/5/28)) ReadFile Die Anforderung konnte wegen eines E/A-Gerätefehlers nicht ausgeführt werden.

file_pread(5,1,buffer,7856128(489/5/29)) lseek err Invalid argument
file_pread(5,14,buffer,7856129(489/5/30)) lseek err Invalid argument
file_pread(5,3,buffer,7856143(489/5/44)) lseek err Invalid argument
file_pread(5,3,buffer,7856190(489/6/28)) lseek err Invalid argument
file_pread(5,8,buffer,7856206(489/6/44)) lseek err Invalid argument
file_pread(5,11,buffer,7856253(489/7/28)) lseek err Invalid argument
file_pread(5,2,buffer,7858175(489/37/60)) lseek err Invalid argument

Results

interface_write()

No partition found or selected for recovery
simulate write!

write_mbr_i386: starting...
Store new MBR code
write_all_log_i386: starting...
No extended partition
Partition table type default to Intel
Disk /dev/sdb - 4022 MB / 3835 MiB
Partition table type: None

Interface Advanced
P Unknown 0 0 1 489 5 27 7856127
Change partition type:
P FAT32 0 0 1 489 5 27 7856127

fat32_boot_sector
P FAT32 0 0 1 489 5 27 7856127
Boot sector
Bad

Backup boot sector
Bad

Sectors are identical.

A valid FAT Boot sector must be present in order to access
any data; even if the partition is not bootable.

P FAT32 0 0 1 489 5 27 7856127
rebuild_FAT_BS p_fat12 0, p_fat16 0, p_fat32 1
fat_find_type(max_offset=61439, p_fat12=0, p_fat16=0, p_fat32=1, debug=1, dump_ind=0)
No FAT found, reserved=0, fat_length=0
find_sectors_per_cluster skip_sectors=358 (skip_offset=183296)
Can't find cluster size

fat32_boot_sector
P FAT32 0 0 1 489 5 27 7856127
Boot sector
Bad

Backup boot sector
Bad

Sectors are identical.

A valid FAT Boot sector must be present in order to access
any data; even if the partition is not bootable.

TestDisk exited normally.

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