Install from iso grub2

[wirate]

I dont know much about kernels and their commands. To boot Ubuntu livecd from iso using grub2, the following entry is used

menuentry "Lucid ISO on /dev/sda1" {
loopback loop (hd0,1)/home/drs305/Desktop/ubuntu-10.04-beta2-desktop-amd64.iso
linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/home/drs305/Desktop/ubuntu-10.04-beta2-desktop-amd64.iso noprompt
initrd (loop)/casper/initrd.lz
}

Here /casper/vmlinuz (kernel or loader?) uses iso-scan/filename but the kernel with opensuse livecd (/boot/i386/loader/linux) does not recognize it.

I want to know what command (kinda) the opensuse kernel uses in place of iso-scan/filename so that i can boot the iso image through grub.

Thank you

[linuxforever]

vmlinuz is the kernel.

To boot, you first have to point to the root.
Then load vmlinuz and initrd.
And boot then.

However I don't know the syntax of GRUB2 because I never used it.

[wirate]

I have been able to load vmlinuz and initrd and boot. But when I do, it says livecd configuration missing. It needs something after "linux (loop)/boot/loader/i386/linux" and I dont know what. vmlinuz takes "iso-scan/filename" but this one doesn't recognize it.
Thanks

[linuxforever]

I don't know what you are actually doing.

Are you booting to opensuse with GRUB by loading the opensuse kernel and initrd?
And then booting to ubuntu with GRUB2?
I don't know if that should work.

In GRUB1 the command to load the kernel is kernel and load initrd is initrd.
In GRUB2 the command to load the kernel is changed to linux or multiboot.

Anyway, if you want to boot to ubuntu, you shouldn't load the opensuse kernel but the ubuntu kernel.
To see what happens during boot, just hit the escape key.

[wirate]

I am sorry guys I didn't make myself clear. I have an openSUSE livecd image on my hard drive. I want to boot off it. I have successfully booted an Ubuntu image so I assume booting an openSUSE iso is possible as well. But I dont know how to do it.

[linuxforever]

Yes sure, you have to be much more precise.

The opensuse iso-file is on the hard drive.
But what is on that drive, ubuntu or opensuse where it resides, what file-system?

To boot an OS you need to have a boot-file, GRUB1 or GRUB2, on that drive.
If it is possible to boot an opensuse iso file I don't know.

[D-cat]

Boot an ISO via Grub2 | Linux.com