During BIOS Power On Self Test (POST), BIOS scans the hardware and accumulates a list of bootable devices. That list is then ordered into categories and presented as a boot list which is the ordered list of bootable devices on which a boot will be attempted.
This boot list changes as devices are installed and removed, for example:
Changing a disk drive, which might change the string used to represent that bootable device.
Installing and removing USB devices.
Starting and stopping the javaConsole floppy and CD redirection.
Adding or removing PCI cards or express modules.
This section covers the following topics: