As with all wiki documentation, this page continues to be updated. The partitioning options require additional testing. This information will not work for iMac (11,1 or newer) users installing recent versions of Ubuntu (e.g., Maverick, Precise, Quantal...), for this you may try this guide Ubuntu 12.10 on 2011 imac. The presence of the bios-grub partition that the Ubuntu installer creates by defaul