What exactly does "separate partition" mean? I'm not familiar with the term "mount" either. I just set everything in C:\Program Files\EA GAMES as read-only. Is that the wrong way to do it?
If you only have ONE partition, you're running off Admin. If you have multiple "Users" you can choose from when booting up Windows, you've got partitions. I'm not sure how to trun sims from one partition to another, but setting everything read-only in C: Program EA is working for me.
....oh and I am phail. Stupid walls and floors appeared on the next reboot.