Cannot install the second OS (either 10.4 or 10.5) in powerbook G4
I have a powerbook G4 A1106. I just replaced its old 80GB HD with a new 320GB HD. I want to install both 10.4 or 10.5 in it. So I bought both 10.4 or 10.5 install disk (full retail version) from eBay. In my first try of installation, I used the 10.4 disk to partition the new HD into 2 diskes (A & B, 160GB each) and then successfully installed 10.4 into disk A. But the installer didn't see any destination disk after I started the installation of 10.5 (although I can see both disk A & B on the desktop of 10.4). So then I reverse the order of installation. First, I used 10.5 disk to erase the HD and to partition it into A & B, and then successfully installed 10.5 into disk A. Then I got into the same problem as before when I tried to install 10.4 into disk B: the installer didn't see any destination disk.
Does anyone know how to make the second installation work? Thank you so much!!!
PowerBook, Mac OS X (10.5.3)