Standard issue crap with Winderz 95
The first time or two after a new install it will NOT see the CD-ROM, then as if by magic, it appears..
The DOS driver is available at several spots under a W98 Boot Disk
named MSCDEX.EXE
I always use a 98 Boot disk and have the same issue as you, boot it a time or two more and see if it don't appear.