DVD ROM, Hard drive and NIC
The boot sequence order of devices is the order in which your computer will boot its devices. You can usually choose from the hard-drive, the disk-drive, and a few more options.
fat pigs
How many additional devices can be assigned in the boot
over the network
BIOS setup
A computer does not need to have any input or output devices plugged into it at all in order to boot, as long as it is configured to not stop on missing devices; the most common "stop error" for missing devices is a keyboard, and this can typically be disabled.
boot ini
Post
BIOS is looking for a boot sector. If the disk does not have a valid boot sector at the address which is also known by the BIOS, it won't boot from disk.
The SCSI logical unit number for boot devices is almost always zero(0).Matt Friend
bootstrap loader
The Ntldr file reads and loads the boot menu in Windows XP. The file runs from the hard drive but can be run from portable storage devices.