During BIOS power-on self-test (POST), BIOS scans the hardware and accumulates a list of bootable devices. That list is then presented as a boot list, which is the ordered list of bootable devices.
biosconfig enables you to configure the first device to boot at the next reboot or to configure the entire boot order. biosconfig does this by reading the boot-related tables that the BIOS stores in NVRAM and then manipulating the contents of CMOS where the boot order is stored.
This section covers the following information: