Thank you for your prompt reply Fiona. Please note that I can access the partition but I can't boot from it.
Sceen dump is attached with log whose content is duplicated below:
Wed Nov 14 14:50:10 2012
Command line: TestDisk
TestDisk 6.14-WIP, Data Recovery Utility, September 2012
Christophe GRENIER <
grenier@cgsecurity.org>
http://www.cgsecurity.org
OS: Windows 7 (7600)
Compiler: GCC 4.6, Cygwin 1007.9
Compilation date: 2012-11-10T21:44:00
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)=500107862016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sdb)=500107862016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sdc)=4007657472
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive0)=500107862016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive1)=500107862016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive2)=4007657472
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\C:)=164456562688
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\D:)=335544320000
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\E:)=2501894144
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\F:)=104857600
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\G:)=325058560000
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\H:)=174942322688
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\I:)=4007641088
Hard disk list
Disk /dev/sda - 500 GB / 465 GiB - CHS 60801 255 63, sector size=512 - ST500DM0
02-1BD142, S/N:2Z8AJZ2Y, FW:KC43
Disk /dev/sdb - 500 GB / 465 GiB - CHS 229504 224 19, sector size=512 - ST350041
3AS, S/N:2Z8AQWSH, FW:JC4B
Disk /dev/sdc - 4007 MB / 3822 MiB - CHS 487 255 63, sector size=512 - HP v100w,
FW:PMAP
Drive E: - 2501 MB / 2385 MiB - CHS 596 64 32, sector size=2048 - TSSTcorp CDDVD
W SH-S223C, S/N:4R31G6ZB597220, FW:SB04
Partition table type (auto): Intel
Disk /dev/sdb - 500 GB / 465 GiB - ST350041 3AS
Partition table type: Intel
Analyse Disk /dev/sdb - 500 GB / 465 GiB - CHS 229504 224 19
Geometry from i386 MBR: head=240 sector=63
BAD_RS LBA=2048 640
NTFS at 0/107/16
heads/cylinder 255 (NTFS) != 224 (HD)
sect/track 63 (NTFS) != 19 (HD)
BAD_RS LBA=206848 58444
NTFS at 48/134/15
heads/cylinder 240 (NTFS) != 224 (HD)
sect/track 63 (NTFS) != 19 (HD)
NTFS at 149221/119/12
heads/cylinder 240 (NTFS) != 224 (HD)
sect/track 63 (NTFS) != 19 (HD)
Current partition structure:
Warning: number of heads/cylinder mismatches 255 (NTFS) != 224 (HD)
Warning: number of sectors per track mismatches 63 (NTFS) != 19 (HD)
1 * HPFS - NTFS 0 107 16 48 134 14 204800 [System Reserved]
Warning: Bad starting sector (CHS and LBA don't match)
Warning: number of heads/cylinder mismatches 240 (NTFS) != 224 (HD)
Warning: number of sectors per track mismatches 63 (NTFS) != 19 (HD)
2 P HPFS - NTFS 48 134 15 149221 119 11 634880000
Warning: Bad starting sector (CHS and LBA don't match)
Warning: number of heads/cylinder mismatches 240 (NTFS) != 224 (HD)
Warning: number of sectors per track mismatches 63 (NTFS) != 19 (HD)
3 P HPFS - NTFS 149221 119 12 229504 107 15 341684224
Warning: Bad starting sector (CHS and LBA don't match)