You already have the basics of the command needed.

for my little Multias I use:

boot sda5:/boot/vmlinuz.gz root=/dev/sda5

so to boot a CDrom I would guess it would be:

boot hdd:/path/to/kernel/image root=/dev/hdd

just replace hdd with the location of the cd drive (hda = primary master, hdb =
primary slave, hdc = secondary master, hdd = secondary slave, etc...).  Also
replace the root=/dev/hdd with the path to the actual root partition you want it
to use.

> Okay I've got a AlphaPC 164SX. which was running fine but when I did the
> install it told me it couldn't copy Milo to the FAT partition. I didn't
> worry about it since Milo was already installed. Trying to figure out my
> new debian install I rebooted the system (or tried to) Now I can't
> figure out how to boot *into* my regular system (I guess I'm trying to
> boot into the kernal?). Anyways this is the Voodoo I can do to get back
> to the installations screen
> 
> boot hdc:boot/linux root=/dev/fd0 load_ramdisk=1
> 
> Anyone know Milo enough to tell me how to boot my system from the
> CD-ROM? I think if I can get there I can install srm and I won't have to
> worry about this anymore.