Hello all. I have an iBook G4 and a 1TB WD external firewire 400/ usb 2.0/ eSATA HDD that I have partitioned with OS X Tiger and OS X Leopard on separate partitions. When I connect it via firewire and start up the computer while also pressing ALT, it does not recognize the external drive and therefore does not allow me to boot from it. Is there a common problem that would cause this? I did use Carbon Copy Cloner to do the cloning of my system and was sure to partition the drive in Disk Utility with the Apple Partition Map setting. Thanks in advance for any help.