I have a Macbook Air with an SSD drive in it and an iMac with a hard drive in it. The iMac I use for games sometimes but find that when booting my iMac up it takes about 3 times as long to boot. I know as its a 2012 iMac I can't take it apart to install an SSD internally but if i brought a external SSD like the Buffalo MiniStation Thunderbolt SSD edition would I be able to move the operating system to that and boot from that and would it be faster?