I have been able to install Mac OS X 10.6 on one of my Dell Minis, but the not the other. I even tried installing it onto an external drive then go to my other Dell Mini and run it that way, but that didn't work. When I try installing the installation screens are different. I'm trying to install from USB and got this error saying: "Error parsing plist file." or something like that on a black screen then I have a choice to boot from OSXDVD (USB name) a picture of a hard drive, and Windows, whereas when I try this on my other one it works perfectly fine, but with a white screen that pops up showing the Apple logo. I did once read that you can't run Snow Leopard without having 1 or 2 GB of memory which I have 2 GB in my Dell Mini that works and only 512 MB in my one that doesn't, but I don't think that's the problem. Any help?