The Bios maker Aka Phoenix, AMI, etc would have to explain them because they are the ones that wrote them.
Older Dell models used the
-forceit Forces the BIOS updates even if a laptop is not plugged into an AC power source
-forcetype Forces and BIOS file to any Dell model machine
-jabil Force the BIOS updated even though the system says it is the wrong BIOS version
However these switches are dangerous and can lead to a dead system.
AMI (American Megatrends) - AMIBIOS, AMI BIOS
* Press Del when after powering on the computer.
* Some older motherboards that use AMIBIOS may prompt for the F1 or F2 key instead.
Award Software (now part of Phoenix Technologies) - AwardBIOS, Award BIOS
* Press the Del key to enter the BIOS Setup Utility on nearly all AwardBIOS powered motherboards.
* Some older systems using Award's BIOS software asked for Ctrl+Alt+Esc to enter BIOS.
DTK (Datatech Enterprises) - DTK BIOS
* Press the Esc key to enter BIOS, right after powering on the PC.
Microid Research - MR BIOS
* Press F1 to access the BIOS setup utility.
Phoenix Technologies - Phoenix BIOS, Phoenix-Award BIOS
* Press Del during the Power On Self Test, immediately after the computer starts.
* Many older Phoenix BIOS systems required Ctrl+Alt+Esc, Ctrl+Alt+Ins, or Ctrl+Alt+S to access BIOS.
If you're still having troubles entering BIOS or can't figure out what company supplied the BIOS on your motherboard, here are some keyboard commands you might want to randomly try in addition to the any of the ones listed above: