I've tried fsUAE, which I cannot even use due to its interface. I've found no menu or no button how to setup a harddisk, or to define the kickstart, so I gave up before I could measure anything. It's ok to insert a game disk - that's something I see in the user interface. Unfortunately, I'm not really into games.
At a guess, you downloaded the wrong version, ie. without the Launcher (listed as emulator only (No configuration GUI)). That requires you to have or create a text config file.
Make sure you download the one with FS-UAE Launcher and then you can set up and save a configuration with hard-disk/kickstart/etc just like in WinUAE.
