Comment by userbinator
18 hours ago
In other words, they were bare-metal hypervisors which passed through the majority of the hardware, doing a minimum of virtualisation to allow sharing it between VMs. This is easy to see by comparing the responsiveness of a DOS box running something like EDIT in Win9x vs. NT/2K/XP's NTVDM; the latter is a full emulator of basically all the hardware except the CPU.
The unresponsive NTDVM was mainly due to its piss-poor text mode emulation. Win9x still virtualized the graphics card (so you couldn't use SVGA games in Win9x) but its emulation was implemented better.
You can use Reactos' NTDVM in Windows XP just fine.
See? Pepperage Farm and cyberax remembers! Exactly.
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