partitions and/or make non-booting disks bootable again when these symptoms are caused by faulty software , certain types of viruses or human error ( such as accidentally erasing your Partition Table ) .
TestDisk is useful program which queries the BIOS or the OS in order to find the Hard Disks and their characteristics . TestDisk does a quick check of your disk´s structure and compares it with your Partition Table for entry errors . If the Partition Table has entry errors , TestDisk can repair them . If you have missing partitions or a completely empty Partition Table , TestDisk can search for partitions and create a new Table or even a new MBR if necessary .
However , it´s up to the user to look over the list of possible partitions found by TestDisk and to select the one which were being used just before the drive failed to boot or the partition( s ) were lost . In some cases , especially after initiating a detailed search for lost partitions , TestDisk may show partition data which is simply from the remnants of a partition that had been deleted and overwritten long ago .
TestDisk has features for both novices and experts . For those who know little or nothing about data recovery techniques , the command line parameters /log and /debug can be used to collect detailed information about a non-booting drive which can then be sent to a tech for further analysis . Those more familiar with
such procedures should find TestDisk a handy tool in performing onsite recovery .
TestDisk can find lost partitions for all of these file systems :
BeFS ( BeOS )
BSD disklabel ( FreeBSD/OpenBSD/NetBSD )
CramFS , Compressed File System
DOS/Windows FAT12 , FAT16 and FAT32
HFS and HFS+ , Hierarchical File System
JFS , IBM´s Journaled File System
Linux Ext2 and Ext3
RAID 1 : mirroring
RAID 4 : striped array with parity device
RAID 5 : striped array with distributed parity information
RAID 6 : striped array with distributed dual redundancy information
Linux Swap ( versions 1 and 2 )
LVM and LVM2 , Linux Logical Volume Manager
Mac partition map
Novell Storage Services NSS
NTFS ( Windows NT/2K/XP/2003 )
ReiserFS 3 .5 , 3 .6 and 4
Sun Solaris i386 disklabel
Unix File System UFS and UFS2
XFS , SGI´s Journaled File System
PhotoRec is file data recovery software designed to recover lost pictures ( Photo Recovery ) from digital camera memory and lost files including video , documents and archives from Hard Disks and CDRom . PhotoRec ignores the filesystem and goes after the underlying data , so it´ll work even if your media´s filesystem is severely damaged or formatted . PhotoRec is safe to use , it will never attempt to write to the drive or memory support you are about to recover from . Recovered files are instead written in the directory from where you are running the PhotoRec program .
Download this utility from Here.