Be sure to only use the retail version of Tiger which looks like thisĪnd not gray Tiger installer disks. If it is 400 Mhz or faster Mac with only a DVD-ROM drive, there is a media exchange program at You'll want to inform your Mom not to let hard disk space to get under 2 GB free for 10 GB hard drives, and 10 GB free for 40 GB hard drives, and follow the 15% arbitrary rule for larger hard drives. If your iMac is 333 Mhz or less, you'll have to deal with partitioning on Mac OS X becauseĨ GB and larger hard drives can't install Mac OS X without partitioning.Ĥ00 Mhz iMacs can install Tiger if you first make sure that they have at least 512 MB of RAM and 5 GB of free disk space. That means if your iMac is less than 400 Mhz, your maximum operating system is 10.3.9 but you still need to make sure the firmware is up to date for 10.2 or later. Only those with built-in Firewire can, and only those whose firmware has been updated.
