Am about to purchase a new iMac to replace my old iMac g5... I was wondering is there a quick way to transfer all my files (photos, music etc) over from the old to the new?
Fortunately, there is an easy way to transfer your data. It's called Migration Assistant, and requires the use of a FireWire cable as well as Target Disk Mode. Here's how it works:
Connect a FireWire cable between the two Macs.
On the old Mac, go to System Preferences, then Startup Disk. Select Target Disk Mode as the way to restart your Mac.
On the new Mac, wait for the old Mac to mount as a disk.
Open Migration Assistant (in your Utilities folder), select the old Mac as the source to migrate, and follow the directions. The process usually takes between 30 minutes and 2 hours, depending on how much data must be transferred.
Once that's done, unmount your old Mac.
Finally, you'll need to take your old Mac out of Target Disk Mode. I'm not sure exactly how you do this...