As I will be traveling for the next 2 months, I am wondering what is the best- bringing with me my original OSX install CD or install OSX on my external Firewire drive which I am bringing with me for backing up. To install on the external drive, do I boot off the install disk and then install on to the Firewire drive? Will the drive show up as an option for install? I never used CarbonCopyCloner. Maybe that's the way to go?