multiple operating systems

[Bookit Enterprises]

I am in my final year of using Omnis in my business, as I am shutting it down next spring, sometime after I turn 75, which I think is a reasonable retirement age.

I am running 8.0.3.2 Studio on Mac High Sierra, and still using DF files.  I use it for less than half an hour a day, so I am not interested in upgrading to a version of Studio 10, nor transitioning to SQL.

However, High Sierra no longer gets security updates, so I would like to upgrade my operating system to Big Sur, and, eventually, Monterey.

I would like to have a partition on my hard drive that runs High Sierra and Studio 8.0.3.2, and nothing else.

A few years back, I did a partition and set up a second Mac OS, but found moving back and forth between operating systems annoying, so undid that.  Maybe my memory of the experience is incorrect, or I set things up poorly, or it’s just not a good solution.

I may also want to add Windows to the mix, as there are some programs on Windows I would like to run, which don’t have Mac equivalents.

Potential solutions seem to include Boot Camp, Wine, Parallels, Virtual Box, and VMware Fusion.

Does anyone have recommendations among these, or some other solution I have not come across, to run High Sierra, Big Sur, and Windows 10 seamlessly without rebooting between systems, and having Big Sur as my primary desktop?

Thanks in advance,

Grant Thiessen