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Assuming performance doesn't matter too much, isn't it easier to run all of windows NT/2k/XP as a UEFI application, using UEFI for all storage access?

A basic driver to link the NT disk device interface to the UEFI interface shouldn't be too hard I assume.

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Windows XP only supports UEFI because of some excellent hacks[1]. Haven't seen anything for NT or 2k beyond some preliminary testing[2].

[1]https://msfn.org/board/topic/186793-csmwrap-boot-csm-on-uefi...

[2]https://msfn.org/board/topic/183745-is-it-possible-to-boot-w...

UEFI is a weird environment. I'm not sure you can take an off the shelf OS and turn it into a UEFI application, because of things that are missing or restricted versus running standalone. But once you exit UEFI bootservices, you lose most of what UEFI provides, like storage access.

Easier would probably be running something like a single guest hypervisor that would essentially translate the storage (and NICs) into an interface the OS understood.

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