security descriptions

i recently had to reformat my d drive which contained all my files that i was keeping separate from my system drive, to keep them safe HA!. Anyway my computer on restarting ran chkdsk and was unable to read security descriptions in the data stream or something very similar. I could not start my computer. I put the hard drive on my sons computer and got a message that the drive was corrupt and unreadable when i tried to access it in explorer. I did a quick reformat and then put it back on my computer and it fired up. I then tried to recover the lost files using two file recovery progs but neither worked. Just as a matter of interest anyone know what the problem was, and why i now cant restore the files?
thanks
steve

 

If you reset your harddrive there is no turning back unless you pay large amounts of money and get someone to analyze it and repair it ....Those programs usally only do it it if it deletes a file.

Not if you go into dos and format ...you just restarted your HD

 

security descriptors

actually its security descriptors, not descriptions. I was using PCfile recovery which specifically had a settin to recover fioles from a quick format. And, i only formatted the drive with the files on , not the system files.