You need to load CD-ROM drivers in your boot-diskette image.
I have used the following lines in CONFIG.SYS:
and the following line in AUTOEXEC.BAT in order to mount the CD-ROM drive as T:\ :
LH MSCDEX /D:mscd001 /L:T
You will need the *.sys files mentioned in CONFIG.SYS of course. Only one or some of them is needed IIRC but I no longer remember which is used under what circumstances.
BTW the filesystem on the CD is neither FAT nor NTFS but rather ISO9660, but it cannot be accessed unless the boot-image loads CD drivers.