I have 2 problems:

First, i am unable to boot my computer from the floppy drive.
Second, when i boot my computer in DOS, floppy drive is not accesible
(i get the message "invalid drive spesification" when i try to reach it).

Under WINDOWS the drive works WITHOUT problems!

(cables,BIOS SETUP checked.I also changed the floppy(and the cable) with a new one but the problem persists)
Is there a solution for my problem?