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> only two mainstream PC OSes ever actually used more than these two rings. One was IBM's OS/2 I'm curious, would this also then affect ArcaOS?
by donatj 3y ago
> only two mainstream PC OSes ever actually used more than these two rings. One was IBM's OS/2
I'm curious, would this also then affect ArcaOS?
- agrover 3y agoI doubt it. This is probably talking about early versions of OS/2, like, pre-2.0.
- fredoralive 3y agoAccording to https://www.os2world.com/wiki/index.php/Databook_for_OS/2_%E2%80%93_Chapter_2_%E2%80%93_Inside_OS/2_Warp#Ring_Protection_mechanism https://www.os2world.com/wiki/index.php/Databook_for_OS/2_%E... OS/2 Warp 4 uses Rings 0, 2 and 3.
- bonzini 3y ago32-bit Xen also used ring 1.
- JdeBP 3y agoIf it's still using IBM code, then it definitely will. IBM's OS/2 kernel, even the 32-bit one from 2.0 onwards, had 16-bit code and the extra ring usage for IOPL. Then there's the fact that the rest of it is 32-bit. (-:
- creatonez 3y agoArcaOS is doomed, to put it mildly. Arca and eComStation were never given access to IBM source, so everything is bolted on through binary patching.
- lproven 3y agoHi. Article author here. Yes, it will. I am currently evaluating Arca OS. It currently does not run on UEFI machines anyway, although a version that can is in beta and they're getting a copy ready for me right now.