Hello, I'm having a bit of trouble getting my PowerMac to upgrade to 10.5 from 10.4. Let me start off with what I did and how I did it. I obtained a retail copy of 10.5 from a friend and since the DVD drive I put in my PowerMac is not capable of reading dual layer DVDs I ripped the image in Windows 7 to a .dmg file and put it on a 250 GB USB external hard drive. I then connected the external hard drive to my Mac and copied the .dmg image of 10.5 to my hard drive and then partitioned my USB hard drive into a 14 GB partition then I restored the image to the partition on my external drive. I then restarted my Mac and held option to select my boot device ,which was the 14 GB partition with the 10.5 image. I then booted into the 10.5 set up ,but after selecting my Language the set up said "Mac OS X could not be installed on this machine. Please check manual for system requirements." I looked online and according to what I had found I could run Mac OS 10.5 on my machine. I used Leopard Assist ,but that still gave me that error. I then tried going into command line and recompiling the .mpkg file on the start up disk ,but that brought up an error in command line I didn't quite understand. So, my problem is 10.5 won't install on my machine even though it meets the requirements. I thought just now that maybe the Setup thinks it's going to instal to the same directory that it's in in which case would not meet the minimum system requirements ,but seems illogical because you can select a different drive to install to. So, any ideas of what to do? I can get copies of any logs that you need since my PowerMac is internet capable. It would be nice to get this machine running because it's my first Mac that I have that I actually plan on using. I also want to try and get GarageBand or some other music producing software so I can try and make a little music because Fruity Loops Studio in Windows is way too confusing.