Okay so lately my macbook pro has been kind of sluggish. I did some research and most people on this forum tend to agree that upgrading from HDD to SSD would give me the most noticeable speed difference. I just wanted to confirm that I am understanding everything correctly before proceeding. First, I would be purchasing this to replace my HDD: http://www.amazon.com/Crucial-MX100...qid=1424644180&sr=8-1&keywords=crucial+mx+100 Once receiving I would have to first clone my HDD using SuperDuper before swapping out the HDD for the new SSD. Can I clone it to my external hard drive, just pop in the new SSD, and then clone back to the SSD? I found the following post which provides instructions on how to do this: http://forums.macrumors.com/showpost.php?p=12483448&postcount=22 For Step 4 would I use the GUID or APPLE partition? Last question, I noticed some people saying that it is also necessary to make a copy of the OS (I'm on snow leopard) on the bootable drive. Would cloning the HDD not automatically do this? Sorry if these are idiotic questions but as you could probably tell, I'm not the most experienced person when it comes to this stuff. Please let me know if I am missing anything.