Just a consideration that you'd have to give them ownership of the OSX license (and the original discs) so that they would be legal. I believe the size issue was a limit not a minimum. I think it was 8GB and the partition couldn't be larger than this. Actually here are some discussions on this: http://forums.macosxhints.com/archive/index.php/t-13191.html Your model may not be an issue.... best to check further by googling results. I googled "8GB limit OSX G3" and instantly found the above discussion... Cheers, Cojcolds SE <MacTechLists at cox.net> Sent by: x4u-bounces at listserver.themacintoshguy.com 08/02/07 11:44 AM Please respond to "A place to discuss Mac OS X for the casual user." <x4u at listserver.themacintoshguy.com> To X4U at listserver.themacintoshguy.com cc Subject [X4U] iMac I have an old 333 MHz tray loading iMac. I want to put OSX on it and donate it to the Women's shelter so they can use it for music and photos. I vaguely remember some discussion about having to put OSX on a certain size partition (maybe 6 GB). Does anyone recall anything about this? And, yes I know it will be very slow but it will do what the shelter knows. SE