![]() then it should boot into os x for the first time, and away you go. the installer will run, and when its down it will reboot your mac. run the installer, telling it to use the same disk you told xpostfacto to use, and do not format the drive. it will copy files it needs to the hard drive, and reboot your mac to the install disk. point the app to the cd, and the hard drive you want to install os x on, and click install. for the first time, you will need to have the os x install cd in the drive. If not then use your 10.4 on cd and allow XpostFacto to install it and then boot from that installation. Launch XpostFacto and if you like you can try to see if it will boot from your 10.5 install on the internal drive. it should present you with a dialoge box with some options. Install XpostFacto to this external drive then boot your imac from it. then click on the apple icon in the upper left conor, scroll down to control panels and then to xpostfacto. haven't not done it in a long time, i don't remember exactly, but you should copy the main xpostfacto app to your "mac hard drive>system folder>control panels" folder. in that 'drive' you will find the files that you need. double clicking on it should 'open' it, mounting what looks like a removable drive on your desktop. In fact, it's the most stable it's ever beenHowever, I haven't had the guts to install OSX on it yet. the instructions and info on the web site contains all the info you need, as well as the files that come with the app. I use Xpostfacto on my 8500/120 (now with a G3/266 upgrade) to run OS 9.2.2, and it works just fine. if you can't get 10.2 to install as it should, then you should look into xpostfacto. Now for xpostfacto, it is a neat little app that helps installing os x on unsupported macs, or macs that have issues with supported versions of os x. so you should just be able to boot from the install cd and go from there. it was some of the g3 imacs that needed firmware updated to run os x, not the desktops. but if there is an apple supplied scsi card, then the card needs an update (see here). You can find XPostFacto site’s comprehesive documentation at: The procedure in a nutshell is.Um, according to apple, that g3 does not need any firmware updates to run os x 10.2.8. You’re dealing with an unsupported hack here. Before you think of giving XPostFacto a whirl, be sure to consult the compatibility chart at: Also, make sure your machine has been recently backed up. XPostFacto is an open source utility that enables the installation of PowerPC versions of Mac OS X up to Mac OS X v10.4, and Darwin on some PowerPC-based. XPostFacto is a little hack that brings Mac OS X, OS X Server, and Darwin to older, unsupported, and forgotten Mac models - those draped in the unfashionable beige of times past. Then I stumbled across a little something called XPostFacto, which is open source and free. Mac OS 9 ran rather snappily and the machine served quite nicely as a USB print server. I recently gave an old 7500 a G3 upgrade card from Sonnet, a quad-port FireWire card, and a dual-port USB card (only $37, combined). ![]() Some of those old Macs will actually run Mac OS X 10.2 (Jaguar) - with a little help from an unassuming-looking control panel. Wait, don’t throw out that old Power Mac or Umax clone it may just be up for a little Mac OS X sprucing. OS X for This Old Mac Give your legacy Mac hardware a nudge into OS X with the XPostFacto hack.
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