| What is it running now? If it's running Mac OS 9 or below, click on the Apple at top left and select the Apple System Profiler. Take that information and post it here so we can get a better idea of which model iMac you have (there have been many iMacs starting with the 233 MHz G3 model up to the 20" iMac G5).
256 MB should be the bare minimum you'd want on OS X to make it a little usable. The more memory you add, the better OS X will run.
__________________
• Apple iMac G5 17" (2 GHz G5) - Mac OS X 10.4.11
• Apple Macintosh Quadra 650 (33 MHz MC68040) - Mac OS 8.1
• Apple PowerBook Duo 230 (33 MHz MC68030) - System 7.1
• "JHVH-1" (2 GHz AMD Athlon XP 2400+) - Slackware 12.1
• "Kidbuntu" (2.8 GHz Celeron D 335) - Ubuntu 8.04 |