serial activate serial console
forensic do not touch any harddisks during hardware recognition
debug [ break=live-bottom ] get interactive shells during startup process
- grub start GRand Unified Bootloader (GRUB)
- dos start FreeDOS 1.0
+ grub boot GRand Unified Bootloader (GRUB)
+ dos boot FreeDOS 1.0
bsd boot MirOS BSD
hdt boot Hardware Detection Tool
grml2ram copy to RAM and run from there