Maris Avots said: >If using Carbon Copy Cloner impacts system performance, what is the best way >to move existing system files to a new hard drive? If you want an exact clone of your system, it's still Carbon Copy Cloner. If you just want another system installation, a better way to go, if it will work, is to install the system with our original OS X installer CD's. However, some folks (mostly in the early days of OS X) have reported that they cannot successfully create a bootable external drive using their install CD's, yet they can using CCC. Randy B. Singer Co-Author of: The Macintosh Bible (4th, 5th and 6th editions) Routine OS X Maintenance and Generic Troubleshooting http://www.macattorney.com/ts.html