Have your USB drives become corrupt or deleted your files or formatted your USB Pen drives accidentally without knowing and thought that all the files in the drive are gone forever.But in the actual case the file is still alive and it’s recoverable only if the disk hasn’t been overwritten.Only the pointer to that file is being actually deleted and the windows thinks that there is an empty space and writes over them.When a file is deleted, it is removed from the file system. However, the actual data is not erased.Sometimes after unsafe eject of your USB drives it might show that "Drive not formatted.Format it now".Doing so will destroy all your data that moment itself and you are forced to recover that deleted files.
According to Lexar tech support, there is a bug with Windows 2000 (that MS never bothered to fix) and can corrupt the drive when it is removed without proper eject. They recommend EasyRecovery Pro for data recovery which did allow me to recover some files (> 500) using their RAW data recovery program (all other tool failed because usually said "no recognizable file on disc").
See how Linux could save your data from a corrupt USB hard drive at LinuxJournal:How a Corrupted USB Drive Was Saved by GNU/Linux
CD/DVD Data recovery
CD/DVD Data Recovery is an easy-to-use tool to recover corrupted file from CD and DVD, It fast scans disk sectors, rescues the damaged files and copies the correct data to hard disk as possible as it can. The program is especially effective for corrupted digital multimedia files, audio, video, image files, MPEG, AVI, RM, MP3, JPEG etc, and for damaged document and text files. It supports many types of optical disk such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-RW and file systems such as ISO9660 and UDF.
Download click here
Undelete Plus (recover files from memory cards and usb drives)
Undelete Plus is a quick and effective way to retrieve accidentally deleted files, files removed from the Recycle Bin, in a DOS window, from a network drive, from Windows Explorer with the SHIFT key held down.The program supports all Windows file systems for hard and floppy drives including FAT12/16/32,NTFS/NTFS5 and image recovery from CompactFlash, SmartMedia, MultiMedia and Secure Digital cards.
Recuva.exe is only 180KB and it doesn’t require any other DLL files. You can copy recuva.exe to your thumb drive and run it from there.
The inteface is very simple without any settings needed. Just select the drive that you want to scan and click on the Scan button.(referer raymond blog)