Liam Proven composed on 2021-04-27 18:24 (UTC+0200):
> A BIOS is one type of firmware. UEFI is a different type of firmware.
> There are others, but not in PCs, usually.
> If a computer has UEFI, it doesn't have a BIOS. If it has a BIOS, it
> doesn't have UEFI.
> CSM is a UEFI feature. If a machine's firmware has CSM, it must be
> UEFI. If it is UEFI, it is not a BIOS. That means the computer does
> not have a BIOS: it has UEFI instead.
> If it has UEFI then it doesn't have a BIOS.
What this reads is if it has UEFI, it has no basic input/output system.
That makes no sense. Without *a* basic input/output system, by whatever
name, non-volatile storage's controller doesn't get found, so program
code doesn't get found and loaded, keyboard can't redirect into setup,or be
logically connected, etc. UEFI provides basic input/output services,
so it is a BIOS, just a rather evolved one with a changed name, little
different than when Lucky Goldstar changed its name to LG.
> Some UEFI can emulate a BIOS. Some can't.
Which ones can't find a keyboard, mouse, storage controller or other common I/O
device? What am I missing?
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata *** http://fm.no-ip.com/
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