Re: Debian live .iso

[hoan]

here are 2 examples proved to boot on any laptop

menuentry "debian-live-8.4.0-amd64-lxde-desktop_poorinstalled_sda6" {
       search -f -s /Users/debian/debianLXDE
       linux /Users/debian/live/vmlinuz live-media-path=/debian/live 
rootfstype=ext4 boot=live components
       initrd /Users/debian/live/initrd.img
}
menuentry "debian-live-9.3.0-amd64-cinnamon.iso" {
       set isoloop=/iso/debian-live-9.3.0-amd64-cinnamon.iso
       search -f -s $isoloop
       loopback loop $isoloop
       linux (loop)/live/vmlinuz-4.9.0-4-amd64 findiso=$isoloop 
rootfstype=iso9660 boot=live components systemd.debug-shell=1 
systemd.log_level=debug systemd.log_target=kmsg log_buf_len=1M 
printk.devkmsg=on
       initrd (loop)/live/initrd.img-4.9.0-4-amd64
}

ex 1 the debian_lxde is simply extracted from file.iso into directory 
/Users/debian

ex 2 is genuine loopback on file.iso sitting at root of any partition


The reason why you failed is due to "set root=(loop)" ;on booting grub 
sees (loop)/live/vmlinuz + options, loads initrd.img

but once grub gives hands to kernel_vmlinuz in kernel space (loop) has 
no meaning as well as $(loopback) neither $(loop)

option findiso for debian init_space looks for $isoloop (the pristine 
reason to find isoimage where it seats, and try to boot after)

you can forget the whole option systemd related for ...learning in 
details about debian booting

HopeThatHelp

wangji

On 05/04/2018 09:59, Narcis Garcia wrote:
> Has anybody reached to boot a Debian ISO image?
> For example, installing GRUB2 on a USB stick with .iso files.
>
> I've tried this with no luck:
>
> submenu "debian-live-9.4.0-amd64-gnome.iso" {
>      iso_path="/debian-live-9.4.0-amd64-gnome.iso"
>      search --set=root --file $iso_path
>      loopback --delete loop
>      loopback loop $iso_path
>      root=(loop)
>      menuentry "Debian GNU/Linux Live (kernel 4.9.0-6-amd64) [grub]" {
>        linux  /live/vmlinuz-4.9.0-6-amd64 boot=live components "${loopback}"
>        initrd /live/initrd.img-4.9.0-6-amd64
>      }
> }
>
> Results in:
>
> [...] ... mounted filesystem...
> [...] random: crng init done
> Busybox ...
> (initramfs) Unable to find a medium containing a live file system
>
>
>
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