hmm, haven't you made any operations with HD's file system(partitioning, changing FS)? i think nothing can help in such sittuation, the only way is to reformat the drive. if you have some needful staff, there is an oppotunity to restore it:
**********FreeWare Recovery Tools**********
Deleted File Analysis http://www.execsoft.com/freeware/freeware.asp
(NT/2K/XP)
PC Inspector http://www.pcinspector.de/file_recovery/UK/welcome.htm
(FAT 12/16/32 NTFS)
OnTrack http://www.ontrack.co.uk/freesoftware/freesoftware.asp
(Also have a Netware version - NOT FREE)
**********Shareware Recovery Tools**********
File Scavenger http://www.webattack.com/features/filescavenger-704-421808.php
(NT/2K/XP) - Supports Reformatted Volumes -Limited to 32Kb file size!
GetDataBack for FAT http://www.webattack.com/get/getbackfat.shtml
(FAT) Works Even After FDisk and Format, Can run Over the network.
GetDataBack for NTFS http://www.webattack.com/get/getbacknt.shtml
(NTFS) Works Even After FDisk and Format, Can run Over the network.