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I have a modern 64-bit CPU. Does my BIOS still operate in 16-bit REAL mode?
Fresh5 days ago
Mar 15, 20262772 viewsConfidence Score0%
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Problem
Since it is still required to boot, I am wondering, on a x64/AMD64 64-bit system, does the BIOS still use 16-bit instructions? Also does it operate in REAL MODE?
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Fix for: I have a modern 64-bit CPU. Does my BIOS still operate in 16-bit REAL mode?
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x86 processors still start out in real mode. BIOSes are free (and sometimes forced) to switch to protected or long modes while they initialize their hardware, but when they hand over control to the Operating System (or rather its bootloader), they h…
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