I didn't think that the Target Disk Mode worked on Intel MacBooks. However I also tried it on an old iMac to my iBook and it worked great. I needed to install Panther onto the iMac because the wireless adapter doesn't work in Tiger and my iBook uses Tiger. Nevertheless I was able to install Panther on the iMac without any problems using the drive from the iBook. I Googled the problem and found the method described at Low End Mac.com under Miscellaneous Ramblings. Bill