Adding os to Grub?

[yclyde]

Tis may seem quite simple but I've been away from linux for a while. I have a good working install of Libranet 2.8.1 on a 30gb drive. On the install I let grub do the booting & made partitions for future os's to be added(~6gb@). I've just added Mandrake 10.0 But was unsure how to set booting w/o hosing what I had. So I had mandrake boot from a floppy.
Both libranet & drake are installed on / 6gb ea & share 750mb swap.

Question is how do I get mandrake onto grub; I definately want to keep libranet working well.

[pbharris]

hello,
assuming both are on the 1st drive and libranet root partion is on the 1st partition and the drake root partition is on the second partiton this should work. this also assume /boot exists in each partition

#boot=/dev/hda
default=0
timeout=10
splashimage=(hd0,0)/boot/grub/splash.xpm.gz

title libranet
root (hd0,0)
kernel /boot2418/vmlinuz ro root=/dev/hda1 hdd=ide-scsi
initrd /boot/initrd-2.4.21

title drake
root (hd0,1)
kernel /boot/vmlinuz-2.4.18-3 ro root=/dev/hda2 hdd=ide-scsi
initrd /boot/initrd-2.4.24.img

oh yea - this is grub.conf (aka menu.lst)

[yclyde]

Thanks for your help pbharris, but too late. I booted to mandrake & tried to add boot to mbr & lilo took over booting; lost libranet somewhere.

I guess I'll reinstall both. Will lilo or grub pick up a previous install? I know libranet defaults to grub.

[pbharris]

hello,
i am not sure if either will automatically pick up an earlier install.

[yclyde]

well I've reinstalled both os's in all combinations about 6 times each and cannot get either to recognize a previous install.

Reiserfs, hda1150mb boot, libranet 6gb hda5 W/grub on boot & install on /, Mandrake 6gb hda6 tried all combos offered on boot, 750mb swap.

I cannot even see another install from within either. I don't know if I should put them on ext3 instead or what. Libranet is what I will be using so I guess I'll boot drake from a flop.

Tired of installing. Libranet has a nice feature though, that allows for a nearly full os update almost as smooth as windows update. Takes a while though.

Thanks for your interest pbharris.