[OtinG]

With High Sierra on one of the two partitions of my Mac Mini 2012 HDD and Windows 10 on the other, both partitions are populated with the system files for the respective OS on it, as well as all app files, personal files, etc. I assume it would partition each Mac OS X the same where it uses only the files on the appropriate partition when you boot into that partition. When booted into the High Sierra partition I can only see that partition and its associated files in Finder. However, I think when booted into the Win 10 partition I can see the files in the High Sierra partition, but I haven't run the Win 10 partition in quite a while so I'm going by memory. When in Win 10 the it is using Windows file system rather than Mac OS X Finder.

One quirk arose after installing Bootcamp and doing the partitions so I could run High Sierra or Win 10. This is likely just a quirk of the Mac Mini though. But the Mac Mini is now a royal PITA when restarted, regardless of whether I restart into the same partition or try to switch partitions. (BTW, switching partitions requires a restart.) This quirk also occurs in other instances. The quirk is that the Mac Mini goes into sleep mode and totally refuses to wake up. This is a well documented issue with some Mac Minis which are not running Bootcamp, but I never encountered it until after installing Bootcamp. So now if I want to restart for an update or any other reasons, chances are it will simply put the screen to sleep and sit there, which eventually requires a hard restart. For updates that can be a true PITA, especially since Apple doesn't keep the blank screen populated with text telling us where we are in the process. It is also a PITA when switching partitions. Most restarts require at least twice as long to complete, especially if restarting for an update. So be forewarned if you have a Mac Mini. Bottom line, if my Mac Mini goes into screen sleep mode for any reason, it cannot be awoken, and I will have to executed a hard restart.