Re: [ros-dev] freeldr

[Ameen Ross]

>   ah so you're claiming something like this would
> work out of the box:
>  label ubuntu1104
>  kernel memdisk
>  append iso initrd=ubuntu.iso 
This is one entry from my multiboot USB drive's
GRUB menu:

title Ubuntu Netinstall x86
find --set-root /iso/ubuntunetinstall.iso.gz
map --mem /iso/ubuntunetinstall.iso.gz (hd32)
map --hook
chainloader (hd32)


>   To my knowledge, Linux ISO booting consisted of
>  [A] booting kernel
>  [B] processing INITRD
>  [C] mounting CD/DVD/BluRay, or ISO
>  [D] continuing. 
This is another entry in my menu.lst:

title Kubuntu 10.04
find --set-root /iso/kubuntu-10.04-desktop-i386.iso
map /iso/kubuntu-10.04-desktop-i386.iso (0xff)
map --hook
root (0xff)
kernel /casper/vmlinuz file=/cdrom/preseed/kubuntu.seed boot=casper 
persistent iso-scan/filename=/iso/kubuntu-10.04-desktop-i386.iso splash
initrd /casper/initrd.lz

Both boot methods work just fine.
>   What I mean is only doing C and D, everything has to
> be self-contained 
>  in 1 single file
>  For DOS this goes fine as it doesn't enter protected mode. 
Not entirely true.
This is another of the entries in my list:

title FreeDOS Balder Floppy
map --mem /iso/balder10.img.gz (fd0)
map (hd1) (hd0)
map (hd0) (hd1)
map --hook
chainloader --force (fd0)+1
rootnoverify (fd0)

This works fine, as long as I don't boot with HIMEM.