can't install base system/cdrom won't mount

[alan maxwell <amaxwell663@comcast.net>]

trying to install woody on mac 68k. everything goes well with
installation until i get to " installing the base system "
i choose cdrom for location of the files and get a "cdrom failed to
mount " error. i used the shell to try to mount the cdrom using
" mount -t iso9660 -o ro /dev/sr0 /cdrom " ( from o'reilly's debian
linux book ) but that didn't work. i did a google and read the faqs but 
couldn't find anything.

any suggestions ?

thanks.