Your PC could be running a secure *cough* MS OS and then you could run other versions of Windows within VPC and have an easier time of things. I think that's one reason Microsoft purchased Virtual PC.
#WINE EMULATOR MISSION CRITICAL INSTALL#
So, yeah, he could put multiple partitions on his laptop hard drive, install 10 or more Unix/Linux/BSD variations, or he could just shuffle drive image files around. Saves a lot of time re-installing OS's when they become corrupt. You screw up something, just toss the bad image and start a clean copy. Also, once you get your base image set up, you make a backup copy and then start in on your kernal tweaking or whatever. Saves a lot of time in formating the hard drive, rebooting, etc.
![wine emulator mission critical wine emulator mission critical](https://odkialbrucke.com/hgsf/ZGGStlMXkxsFLowWl2Xz_QHaEW.jpg)
These images do not have a set size and can expand as needed. Virtual PC makes it really easy to set up disk images for each OS. that's probably heresy, but my working mac is old :P )
![wine emulator mission critical wine emulator mission critical](https://www.ubuntupit.com/wp-content/uploads/2019/03/Andro.jpg)
The only thing I've grabbed recently is an Apple ][ emulator for old times sake (running on Windows. I slipped away from the emulator scene after the death of that machine, though. I also ran emulators for everything under the sun and probably had more OSes than he had that way - I tried a good chunk of the downloadable OSes I found off of and had VirtualPC (1.0, mind you) with DOS and Windows 95 (tho the OS is technically DOS). I had at least 5 (and I recall 7, but I have a feeling that included YellowDog Linux and Debian PPC) mac native OSes installed at once before the machine failed (power supply, I later learned - this was on a PowerMac 7500). I never learned Forth well enough to write my own boot loader, tho.
![wine emulator mission critical wine emulator mission critical](https://cdn.appuals.com/wp-content/uploads/2017/10/400-Bad-Request-Chrome-3.png)
Having had both BSD and Linux variants on mac right at OS X.0 release, I didn't find an easy way to boot load all without typing in openfirmware commands (in Forth).