I was about to install a game when I remembered how they used to frag the HD petty badly on my PC. So I went to set a partition & couldn't find a means to do so. Come to think of it, I've never seen a way so scan or de-frag either. The only things Finder found about these were both in Adobe Photoshop. I'd be grateful for any help.

Thanks, Joe. that was very helpful & informative.