How do I find out if a game will run on PlayOnLinux/PlayOnMac?
Excellent question. Since POL/POM is a front-end for Wine, the first place to check is WineHQ's AppDB. There are many, many entries for a lot of software. If it is even remotely popular, and people have attempted to use it through Wine, it will likely be listed there.
How to move PlayOnLinux virtual drives to another disk (with more free space)?
Read the advanced topic here: How to move PlayOnLinux virtual drives to another disk
How do I run Wine/POL as root or sudo?
You don't. You should never, ever run Wine or POL as root or using sudo, or any other privilege escalation mechanism.
My post was closed with a semi-automated reply? What did I break?
Nothing. What that means is that your post is lacking information that we need to troubleshoot, or possibly violates our terms of service.
Check the following links to make sure that you didn't accidentally violate ToS, and that you are posting the information required: