If any essential Mac OS X files become damaged, corrupted, or are deleted or renamed.If you have a catastrophic hard drive crash that requires you to initialize (format) your boot drive.If you get a new Mac that didn't come with Mac OS X pre-installed.But you may find occasions when you have to install/reinstall it, such as the following: And in a perfect world, that would be the case. In theory, you should only have to install Mac OS X once. Mac OS X Server version 10.3 'Panther'is the fourth major release of Apple's award- winning server software, providing standards-based workgroup and Internet services without the complexity inherent in other UNIX-based solutions. Downloads last 24h = 814: 188469.2MB Last 5000 friend visitors from all around the world come from. Patches for Mac OS X 10.3 Panther / DMG image 349. This is because my disc refused to be imaged properly. Mac OS X 10.3 (Panther) - 2Z691-4633-A - 2Z691-4586-A - 2Z691-4587-A Note: Install disc 2 was not ripped by me, and comes from a separate source.