The one we wrote for the class :) Well, sort of. The first assignment was to write a bootloader in x86 assembly. For the second assignment we were given a boot

The one we wrote for the class :) Well, sort of. The first assignment was to write a bootloader in x86 assembly. For the second assignment we were given a bootloader and a partially-implemented kernel, and we had to finish the kernel by writing a non-preemptive (cooperative) scheduler (including implementing context switching and so on). Third assignment same thing but a preemptive scheduler. And so on. The partially-implemented kernel is very rudimentary—kernel threads but no userspace threads or forking, no filesystem, no virtual memory and no actual difference between kernel mode and user mode (until the virtual memory assignment, in which the partial kernel we were given did actually do ring transitions), etc. Anyway all this is to say that we were running a very very bare-bones, stripped-down kernel, and even then it was annoyingly slow, so I expect that it would be still be extremely slow running a "real" OS. It's my understanding that that's not really what Bochs is for, though. If you want to run Win95 use a normal VM; Bochs is meant to be a low-level x86 development tool. Though again that's just my impression, so I could be wiong in that.