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Real Mode OS Warning: Difference between revisions

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Real Mode OS Warning (view source)

Revision as of 16:34, 18 April 2020

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Currently the entire industry (all "80x86 PC" manufacturers all OSs for "80x86 PC") are shifting to UEFI. At the end of this transition (at some point in the future) BIOS will cease to exist. Relying on the existence of BIOS functions is not a long term option. Temporarily relying on the existence of BIOS functions (for the short term) makes it much much harder to port the OS to UEFI later, and also makes it much much harder to port the OS to other platforms (ARM, SPARC, etc) because everything that the BIOS was used for has to be replaced.
 
''Note: Intel havehas officially stated that they will cease supporting BIOS (go from "BIOS+UEFI hybrid" to "UEFI only") before the year 2020; and some people expect that Intel's main reason for doing this is so that they can start removing obsolete hardware from their chipsets (starting with A20 gate, and possibly including PIC, PIT, PS/2, legacy ROM areas and VGA emulation).''
 
== BIOS Does Not Support All Devices ==
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