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I have done so much research on how to program a BIOS from scratch but I got nothing. Does anyone one have any kind of BIOS tutorial or guide, that would be much appreciated. I have gotten absolutely nowhere. It's probably not possible but I'm wanting at least a semi-universal BIOS, ideally using a virtual machine.
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In order to access BIOS on a Windows PC, you must press your BIOS key set by your manufacturer which could be F10, F2, F12, F1, or DEL. If your PC goes through its power on self-test startup too quickly, you can also enter BIOS through Windows 10's advanced start menu recovery settings.
Common keys to enter the BIOS are F1, F2, F10, Delete, Esc, as well as key combinations like Ctrl + Alt + Esc or Ctrl + Alt + Delete, although those are more common on older machines. Also note that a key like F10 might actually launch something else, like the boot menu.
Method 2 of 3: As long as you are able to access your Windows desktop, you should be able to enter the UEFI/BIOS without worrying about pressing special keys at boot time. Entering the BIOS requires you to restart your PC.
coreboot is an open source BIOS project that supports over 200 mainboards. This could be a good place to start if you want to browse some code and get an idea of everything a bios has to accomplish.
http://www.coreboot.org/Welcome_to_coreboot
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