This Tutorial is for installing Mac OS X Lion 10.7 over Leopard. Now you can update to Mac OS X Lion directly from Leopard 10.5. Please Read Before Watching!! Downloaded the iso image and proceeded to make a Mac OS X bootable USB on windows. To create a bootable media to install Mac OS X leopard on my old macbook A1181. I used imageusb and installed. I was very happy to find this 10.5.4 version which worked perfectly. Many thanks to all.
1. Click here, install the DVD, and run Software Update. Once you’ve done this, you’ll be able to use the current versions of Chrome and Firefox; if you’d like to use a recent Safari or otherwise desired, see #2.
2. Open the Mac App Store and try downloading Yosemite. If you get told it's incompatible, go to the online Apple Store and order a download code for Lion 10.7.
Upgrade Mac Os X 10.5 8 To Snow Leopard Free Download
Mac OS X 10.7 and newer don't support PowerPC software such as Microsoft Office 2004. If you upgrade the OS, back up the computer first.