Thanks, I know nothing about the BIOS and other related hardware topics. Does "e...

bombcar · on March 16, 2022

Extended mode means - 32 or 64 bit mode, once "thunked" into that I believe you can no longer access the BIOS directly.

So even if there are exploits lurking, they wouldn't affect modern OSes which are all at least 32 bit now.

This is specifically to the x86 family, it's possible that some other chip still has original code ready to go even in 32 or 64 bit mode.

hnthrowaway0315 · on March 16, 2022

Thanks for the explanation! I Googled a bit and found the topic fascinating (especially the ones regarding malwares that are particularly difficult to remove)