4. Changes to grub

In short, this patch adds:

• ``showdefault'' command, which can be used both from the boot time shell and from the command line interface on your running system. This command will print on the screen the default being currently saved in the boot area.
• ``savedefault'' is modified to:
  • accept one more parameter at the boot time shell. If no parameter is specified, savedefault will behave in the standard way. If one parameter is specified and this parameter is a number, like in ``savedefault 3'', grub is told to remember to boot the entry number 3 instead of the current one.
  • accept two more parameters at the command line interface when run from your command prompt. The first parameter must be the entry we want grub to boot on the next reboot. The second parameter is the name of the stage2 image used to boot. If no image is specified, ``savedefault'' will try to figure it out by itself, so, no need to worry about it on most installations.