中国DOS联盟

I see in the materials that some use scdrom and some use cdrom.

title Boot From CD Drive
cdrom --init
map --hook
chainloader (cd0)

scdrom --install (Initialize, install CD drive)
root (cd) (Operation to specify the boot drive letter)
root (Show that the disk is 80H)
run (hd0,0)/emurtosk.bin (Run it)

Refer to this. It was used like this before
http://sysoft.zdwx.com/grub/#5._Support CD-ROM boot

scdrom seems to be a module of suze's smart boot, so it's called scdrom. As for whether cdrom is okay, I'm not sure. I've always stayed at grub for dos 0.97