Installing OS X on an external drive is a piece of cake. Even if you already have El Capitan installed on your Mac, you can download the installer for free from the App Store.

so i am over at my gf's place helping her install a new 60 gb drive in her CRT imac. actually forget "helping," i'm doing it.anyway, so it's all good, the drive is in there and the imac has been ...

Mac OS X 10.10.4 Supports TRIM for Third-Party SSD Hard Drives Tuesday June 30, 2015 9:07 pm PDT by Husain Sumra ...