Fired up after the Open Source Developer's conference in Brisbane, I decided to try dual booting my recent iMac with Ubuntu 9.10 and MacOS X.
Boot camp assistant lets you resize the Mac partition down a bit to make way for a "Windows" partition.
Then I inserted the Ubuntu installer CD and rebooted. Up comes the familiar Ubuntu installer.
The partitioner knows about MacOS and the only glitch was that the partition slider acts a little strangely. Nothing bad happened though.
As with my last install, it took a long time downloading language files for Australia but in the end it finished and my first reboot ended in a pretty crash.
In the end all is well and I can boot into either MacOS or Ubuntu by holding the Option key at boot. Choosing "Windows" gives me the Grub boot menu which I notice offers MacOS X (haven't tried booting that way yet).
Normally I run Linux on a netbook where it works nicely thankyou. Switching between MacOS and Ubuntu on the same hardware makes me appreciate what a polished OS MacOS is. It's silly, I know, but the fonts are just better on the Mac and that makes a difference to me.
Ubuntu on iMac for me doesn't reboot cleanly for some reason but otherwise things work, including my Bluetooth Magic Mouse (although no right-click or scroll).