Bjr,
merci pour votre réponse et désolé de mon retard (beaucoup de boulot).
voici le log :
Mon Sep 30 21:00:45 2013
Command line: TestDisk
TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <
grenier@cgsecurity.org>
http://www.cgsecurity.org
OS: Windows 7 (7601) SP1
Compiler: GCC 4.7, Cygwin 1007.17
Compilation date: 2013-07-30T14:08:52
ext2fs lib: 1.42.2, ntfs lib: 10:0:0, reiserfs lib: 0.3.1-rc8, ewf lib: 20120504
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sda)=64023257088
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sdb)=1000204886016
filewin32_getfilesize(/dev/sdc) GetFileSize err Fonction incorrecte.
filewin32_setfilepointer(/dev/sdc) SetFilePointer err Fonction incorrecte.
Warning: can't get size for Disk /dev/sdc - 0 B - 1 sectors, sector size=512 - SAMSUNG HD103SI
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive0)=64023257088
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive1)=1000204886016
filewin32_getfilesize(\\.\PhysicalDrive2) GetFileSize err Fonction incorrecte.
filewin32_setfilepointer(\\.\PhysicalDrive2) SetFilePointer err Fonction incorrecte.
Warning: can't get size for \\.\PhysicalDrive2
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\D:)=104857600
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\E:)=958261538304
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\F:)=1000202241024
filewin32_getfilesize(\\.\G:) GetFileSize err Fonction incorrecte.
filewin32_setfilepointer(\\.\G:) SetFilePointer err Fonction incorrecte.
Warning: can't get size for \\.\G:
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\L:)=41833988096
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\Z:)=64020807680
Hard disk list
Disk /dev/sda - 64 GB / 59 GiB - CHS 7783 255 63, sector size=512 - SanDisk SDSSDH2064G, S/N:3331373038333034313138322020202020202020, FW:X211200
Disk /dev/sdb - 1000 GB / 931 GiB - CHS 121601 255 63, sector size=512 - ST1000DL002-9TT153, S/N:2020202020202020202020203157305654393742, FW:CC32
Drive F: - 1000 GB / 931 GiB - CHS 1953520002 1 1, sector size=512 - SAMSUNG HD103SI
Partition table type default to Intel
Drive F: - 1000 GB / 931 GiB - SAMSUNG HD103SI
Partition table type: Intel
Interface Advanced
New options :
Dump : No
Align partition: Yes
Expert mode : No
Partition: Read error
file_win32_pwrite(296,1,buffer,0(0/0/1)) write err
Write error: Can't write new MBR code.
TestDisk exited normally.
Merci pour votre aide.
cactus