I want to reformat my XP computer. I have a dvd writer (replaced a CD-ROM) and a dvd ROM. When I try to reboot with the XP SP1 disk in either drive it is not recognised - I changed First Boot Device to CDROM but when I get the message "press any key to boot from cd" nothing happens and it boots normally. The writer works normally for dvds and the dvd-rom works normally for playing cds or dvds. I have checked the BIOS - Standard CMOS Features which show: IDE Primary Master Maxtor 6Y080L0 IDE Primary Slave Maxtor 86480D6 IDE Secondary Master DVDRW IDE H16X IDE Secondary Slave as Lite-On Combo LTC-48 so both drives are recognised. Checking the Advanced BIOS Features, if I want to change any of the Boot Devices I am given a choice of floppy, LS120, HDD-0, SCSI, CDROM, HDD1, HDD2, HDD3, ZIP100, USB-FDD, USB-ZIP, USB-CDROM, USB-HDD and LAN. You will see that there is no DVDRW or DVD-ROM. So how do I change the Adanced BIOS Features so that I can boot from either of these drives with the XP disk? If I cant change the Advanced BIOS Features how can I reformat?