====== Multiboot on USB disk ======

**WARNING :** this example is for USB key present as /dev/sdc
**WARNING :** if you follow this howto, you will wipe the disk (__make backups before__)

  - Plug a USB key in your computer
  - Erase your USB disk
  * Windows : use http://www.diskwipe.org/
  * GNU/Linux : ''dd if=/dev/zero of=/dev/sdc bs=128M''
  - use Easy2Boot to make a multiboot disk : http://www.easy2boot.com/make-an-easy2boot-usb-drive
  * On windows, use usbit in order to make a zip compressed raw image of the multiboot USB key (http://www.alexpage.de/usb-image-tool)
  * On GNU/Linux, use dd : ''dd if=/dev/sdc of=./image.raw bs=128M'' (and compress it with gzip for example)
  - copy the image on the server, in rescue mode under ubuntu
  * Windows : use filezilla : https://filezilla-project.org/ 
  * GNU/Linux : use scp
  - connect the server, in rescue mode under ubuntu, with ssh

<code bash>
mv multiboot.imz  multiboot.raw.zip
unzip -e multiboot.raw.zip
</code>

If not enough place in ramdisk, mount a disk (not the USB one on the server) and move the compressed image file and uncompress it
  - Dump the image to the USB drive (/dev/sdc) : ''dd if=./image.img of=/dev/sdc bs=128''
  - Boot the server on the USB drive :
  - run IDRAC, go to boot menu (R220 II : press F11 when prompted)
  - chose the USB hard disk and... voila !