Hi everyone, I need some guidance as to the best way to go about the below. I have a 2007 INTEL iMac 24" WHITE body not aluminum. This iMac had a bad hard-drive which I replaced with a new one. This iMac doesn't have updated firmware to support the internet recovery options, so i am forced to old school recovery /have to use discs. I bought an Apple Tiger 10.5.6 , , which when I hold down C while turning the iMac on, it doesn't boot off this disc. When i looked up the specs, i noticed this iMac originally came with 10.4 OS, so I am thinking that is the disc I need to install an O/S for a freshly installed clean drive? Is there any way to bypass or do anything to make my 10.5.6 disc work or should i just ebay 10.4? Thanks in advance everyone!