I want to make sure I am best utilizing the speed of my new powerbook (15" 1.5 1 Gb RAM, 128, 5400) for editing video: I'm getting a firewire 800/400 160 Gb external drive and I have two 60 Gb external firewire drives (one is currently used for backup) Please let me know if this is what I should do: 1. Install the OS (10.3.3) on the 160 external drive (and possibly others) 2. Install Final Cut Pro 4 on what I will intend to be the boot drive for editing (i.e. the 160 or at least part of it) as well as the internal PB drive. 3. Boot from the boot drive (by selecting it as the boot drive in the OS sys prefs) and run FCP on this drive. Or should I run the app on my internal drive? 4. Save the FCP files on either of the external hard drives. Regarding partitions, is it ok if I partition the 160 for half OS boot drive/FCP and other apps/ half storage/backup? Is this possible? Also, is it really that much faster if you run the app from an external boot drive? Is it because the ext. drives are 7200 rpm and my internal is 5400? Thanks so much for any advice!!