I LOOSE THE D: PARTITION

I NEED A TOOL THAT HELPS ME TO RECOVER THE D: UNIT. I`AINT GOT RECOVER DISKKETTE AND I CAN?T VISUALIZE IT BY THE FDISK PARTITION INFORMATION VEWER. THERE ARE IMPORTAN CONFIDENTIAL INFORMATION IN IT THAT I CAN`T LOOSE ANY WAY, I WOULD APRICIATE ALL YOUR HELP.