reading floppy drive

[Dave O'Donnell]

Hi,
Maybe I'm missing something simple here &
I'd appreciate a pointer. As an exercise I want to create a class to read the entire contents of a floppy drive as bytes, (the idea is to read all files even though they may be deleted) and recover the deleted files. As I understand that to delete a file all that happens is the first byte or 2 are changed to some constant value, the rest of the file isn't wiped).
Any ideas what classes I should be using for a reader ?
Thanks, Dave