Hi, I am trying to install Leopard on my iMac G5 (1.6 GHz, 1 GB, 160 GB) which is currently running Tiger. Neither the installer nor the disk utility or Leopard's startup disk tool can see the current Mac OS X partition (which is the only partition on the drive). The installer list of partitions and disks is just empty and disk utility shows the hard disk but not the partition. After booting the Leopard installer twice I removed the DVD with the next reboot and got a questioning Mac symbol on the screen. After a while I reached the bootmenu screen and my OS X partition appeared and I could boot back into Tiger. The OS X parttion is the factory-installed Tiger installation on a normal Apple Partition Map hard disk as from the Apple factory. Did anybody else stumble over this?