So yes, you can install Windoes8/Server12 in a VMware 4.x environment using the bios.400.rom trick.

That has worked well enough, but I learned a couple somethings over the last week.

Long story, but I'm moving my VMs to new datastores.

I could not get a Server12 VM to move. It is a heftier than normal VM, weighing in at 800GB and the move would go for hours and fail with:

A general system error occurred: Source detected that destination failed to resume.

Frustrating.

Eventually I asked the server owner if I could take it down for a day and get the move done, which went well until I went to power the VM back up.

Could not open bios.440.rom (No such file or directory).

I looked and no, the bios.440.rom file had not been moved. I re-uploaded it and the server booted fine.