===== Vytvoření multibootovacího USB média s iso soubory =====


[[https://wiki.archlinux.org/index.php/Multiboot_USB_drive]]\\
[[https://yous.be/2017/11/14/how-to-make-a-bootable-usb-with-grub2-and-iso]]\\
[[https://mbusb.aguslr.com/misc/clonezilla.html]]\\
[[https://github.com/aguslr/multibootusb/tree/master/mbusb.d]]\\
aj...\\

== Postup ==

  - naformátovat flashku např. na EXT4\\
  - přimountovat flashku a vytvořit adresáře <code>
mount /dev/sdXY /mnt
mkdir /mnt/iso
mkdir /mnt/boot
</code>
  - nakopírovat iso soubory distribucí do /mnt/iso\\
  - nainstalovat GRUB na USB disk <code>
sudo grub-install --removable --boot-directory=/mnt/boot /dev/sdX
</code>
  - nakopírovat memtest <code>
cp /boot/memtest86+* /mnt/boot
</code>
  - vytvořit soubor /mnt/boot/grub/grub.cfg s obsahem např.: <code>
set timeout=-1
set default=0

menuentry "Ubuntu Desktop 18.04.1 LTS amd46" {
  set isofile="/iso/ubuntu-18.04.1-desktop-amd64.iso"
  loopback loop $isofile
  linux (loop)/casper/vmlinuz boot=casper file=/preseed/ubuntu.seed iso-scan/filename=$isofile noeject noprompt splash --
  initrd (loop)/casper/initrd.lz
}

menuentry "Xubuntu 18.04.1 LTS i386" {
  set isofile="/iso/xubuntu-18.04.1-desktop-i386.iso"
  loopback loop $isofile
  linux (loop)/casper/vmlinuz boot=casper file=/preseed/ubuntu.seed iso-scan/filename=$isofile noeject noprompt splash --
  initrd (loop)/casper/initrd.lz
}

menuentry "Clonezila 2.5.5" {
  set isofile="/iso/clonezilla-live-2.5.5-38-i686-pae.iso"
  loopback loop $isofile
  linux (loop)/live/vmlinuz boot=live components config findiso=$isofile ip=frommedia toram=filesystem.squashfs union=overlay username=user
  initrd (loop)/live/initrd.img
}

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry 'Memory test (memtest86+)' {
	insmod part_gpt
	insmod btrfs
	set root='hd0,gpt1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  442D-A863
	else
	  search --no-floppy --fs-uuid --set=root 442D-A863
	fi
	knetbsd	/boot/memtest86+.elf
}
menuentry 'Memory test (memtest86+, serial console 115200)' {
	insmod part_gpt
	insmod btrfs
	set root='hd0,gpt1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  442D-A863
	else
	  search --no-floppy --fs-uuid --set=root 442D-A863
	fi
	linux16	/boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
</code>
  - **!!!** V oddíle //__Memory test__// změnit všechna čísla **442D-A863** na skutečné UUID disku.
  * to zjistíme např: <code>
lsblk -f
</code>