Well since you didnt state just what you need the boot disk for and/or what OS you need the boot disk for, its gonna be kind of hard to explain
anything pertaining to a boot disk.
But i can offer a link for you to get any boot disk in any format you need.
yes i should clear that up. well i got a windows xp ido. file and i need to put that on a cd. then i need to use that to wipe a current hard drive and
replace it with what is on the disc.