How do you boot from CD to format PC using windows XP installation disk?
Just insert your CD and then turn on the computer. It should boot from CD upon startup. If it doesn’t do that. Then you will have to enter the BIOS setup. That is the first thing you see at bbootup before going into the O/S. Typically you’ll see a command to hit F10 to enter setup(The key is different for different machines, so you’ll have to read what it is). Once inside BIOS, you will need to move CD-ROM as the first device in boot order and try booting again. If all the fails, you could then trying to boot from a boot floppy and starting the setup from there.