Apple now provides the Mac OS X 10.7 Lion installer as a free download. While the standard download is a single InstallESD.dmg needed for creating bootable media is located that installer. EduGeek.net 1. Download the Lion Installer

If your primary Mac is completely non-functional, you can flash the extracted InstallESD.dmg onto a drive using a Windows computer:

Lion was the first version of OS X to drop support for PowerPC applications (Rosetta) and requires an Intel Core 2 Duo, i3, i5, i7, or Xeon processor. If you're looking to bridge the gap between "Vintage" and "Usable," Lion is often the starting point. If you'd like to move forward with the installation: (to check compatibility)