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Step 1
Check your computer model to see if it is supported by Mac OS Panther. This version of the Mac OS is certified by Apple to work on the following models: the Bronze Keyboard model of the Powerbook G3, all models of the PowerBook G4 except the Double-Layer SuperDrive model (uses 10.4), all models of the iBook except the Mid 2005 G4 (uses 10.4), all models of Power Mac G5 (except early 2005 and late 2005 models that use 10.4), iMacs released after summer 2001, the Power Macintosh G3 or Macintosh Server G3 with built-in USB ports and all models of Power Mac G4 or Macintosh Server G4.
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Step 2
Make sure you have at least 128MB of RAM (Random Access Memory), although it is always best to have as much RAM as you can afford.
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Step 3
Confirm that you have at least 3GB free hard disk space, although Apple only requires 1.5GB for Mac OS X before 10.2. As with RAM, it is always better to have as large a hard drive as you can afford, even if you meet all the minimum requirements. (An old computer geek saying advises you never to have minimum RAM, only maximum RAM.)
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Step 4
Install a larger hard drive if necessary, or learn how to conserve installation space when installing Mac OS Panther at the Mac OS X Hints site (see Resources below).
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Step 5
Ensure that you have Mac OS 9.1 or later installed for Classic applications.
