Ok, I am currently running OS X 10.1.3, I want to install OS 9.2.1 but every time I try to boot off the restore cd or the 9.2.1 and 9.1 install cd it freezes before the happy mac icon, but if I start ...

Have a look at this mailing list from Low End Mac. You may even want to join. There are several issues that could be affecting your success - the drivers for your HD (only the Apple ones will work), ...

[Editor’s note: This article is part of our series of articles on installing and upgrading to Lion (OS X 10.7). We also have a complete guide to installing and upgrading to Mountain Lion (OS X 10.8).] ...

Users who have experienced that particular issue tend to have multiple partitions on their Mac, which could be causing the problems. Users utilizing Apple's Boot Camp software to run both Windows and ...

Like Lion (OS X 10.7) before it, Mountain Lion (OS X 10.8) doesn’t ship on a disc—it’s available only as an installer app downloadable from the Mac App Store ...