One of my computers is a mac mini 2,1. For sometime I've known the hard drive has had bad clusters or kernels or some such horrible nonsense. However, it really hasn't resulted in any real performance issues. I recently watch a video on how to replace the hard drive. I did a little reading that indicated the mac mini 2,1 could handle a much larger hard drive than 120 gb drive that it came with (an ask.com article suggests 2 TB). I've also come across a new problem. I decided to back up my dvd collection. Unfortunately, the mini tends to overheat and shut off if I engage in such intensive activity. Needless to say, I know this is an older computer but I do have a use for it. I know the computer IS capable of doing the work. As part of a ghetto experiment, I found an ice pack(one that doesn't get wet when it warms up) could keep the computer cool and running smoothly. I'd like to see if I can take a few steps that might take the load off and make this computer run better. It's my understanding that the mini fits 2.5" internal hard drives. It's my understanding that the default drives at SATA I. It's unclear whether they support SATA II or just SATA II at SATA I speeds. 1) I am sure that power requirements are also relevant, as this is a 2,1 mini and it's not meant to be opened and fiddled with. 2) What else do I need to consider? 3) What drives are options? A) Can I use a solid state drive or am I limited to traditional disk drives? B) Would I be able to use a 7200 speed as opposed to the 5400 speed? I also know that when I open this thing up to replace the hard drive, I may as well upgrade the ram too. I have 2gb in place. The max it will take is 4gb. It will actually recognize just over 3.3gbs. 4) What else can I do to a) make the 2,1 mini better? and; b) tackle the existing heat issue?