xp and lost Drives

I up graded to xp from 98se and for some reason I lost the drive-A Icon when I go to my computer ,But if I put in a floppy iN it is still working.But there is know Icon Like you see for c-drive and the other Drives.It only seems to effect drive a.Ifirst installed 98se it was ok but when I upgraded to xp it lost the A-drive icon.