Mystery over mystery
this comes very probably from misunderstanding about the
"iso-scan=" "boot_from $iso" found in most liveiso grub.cfg.
They are not parsed by grub but by "linuxrc/casper or similar init
script" at boot ,so they really depend on the distro's build !
and have nothing to do with grub.
HTH
A few fun exercises on grub :
grub2_playground
https://sites.google.com/site/wjhowto/grub2-svn1725-playground
https://sites.google.com/site/wjhowto/ext2-diskfile-for-grub2
play grub2
https://sites.google.com/site/playgrub2/home
grugefi_K.I.S.S Keep_It_Simple_Stupid
https://sites.google.com/site/grubefikiss/grubefi-and-multiboot
On 02/14/2016 03:22 PM, Karsten Malcher wrote:
Am 14.02.2016 um 12:41 schrieb Y.:
Le 2016-02-13 18:28, Karsten Malcher a écrit :
i want to setup an USB stick that is able to boot different OS form ISO.
Here's an example of Grub2 booting an ISO file:
http://yalis.fr/cms/index.php/post/2013/05/09/Bootable-flash-drive-for-both-Linux-and-Windows%3A-part-2
Cheers
I could try out some things of this article.
Some work other not.
There are some things that cannot be find in the documentation, but they work!
-------------------------------------------------
I tried to start the BIOS updater now this way, it seems to start and fail:
menuentry "BIOS update chainloader" {
set root=(hd0,1)
chainloader --force /boot/img/BIOS.img
}
Disk I/O Error
-------------------------------------------------
I can't understand why this is working?
The loopback is missing but it is working!
menuentry "HDT: Check hardware" {
linux16 /boot/img/MEMDISK iso
initrd16 /boot/iso/hdt-0.5.2.iso
}
-------------------------------------------------
Knoppix can be booted this way without problems.
But why it works with bootfrom = /dev/sda1 ?
menuentry "Knoppix 7.2.0 ISO" {
set isofile="/boot/iso/KNOPPIX-ADRIANE_V7.2.0gCD-2013-07-28-DE.iso"
loopback loop (hd0,1)$isofile
linux (loop)/boot/isolinux/linux bootfrom=/dev/sda1$isofile acpi=off
keyboard=de language-de
initrd (loop)/boot/isolinux/minirt.gz
}
-------------------------------------------------
Mystery over mystery ...
Cheers
Karsten
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