Installing a second Linux OS without any removable media

[mikethephan]

Hi all -
I am currently running FC4 and i want to install a second Linux OS, but i cannot use any CD or Floppy to boot from. Any ideas on how to go about doing this? I am thinking that i can download an ISO, mount it on a new partition and boot using it? However, im pretty new at using Linux and dont quite know how to go about it or even if it is a good idea. Any help would be appreciated, thanks.

[marlowe]

you can mount it with

mount -t iso9660 -o loop /path/to/iso /mount/path

if you're using lilo you can add something like

image=/mount/path
	label="<label>"
	root=/dev/hdaX
	vga=791
	read-only

to /etc/lilo.conf and the run lilo again.

the only problem is that the image has to be mounted at boot time and i'm not quite sure how to add the "-o loop" option to /etc/fstab.