Apparently, Macs have trouble booting the standard Ubuntu iso images (see ref).
[Macs] apparently can't cope with multi-catalog CDs, and simply refuse to boot them... [Colin Watson] therefore created the amd64+mac CD images, which are exactly the same as the amd64 images except that they only support BIOS booting. Macs are happy to boot these in their BIOS emulation mode.
I'd like to install Ubuntu Server 12.04.1 LTS but get an error when booting from an install disk. From what I've gathered, it seems like a solution is possible and therefore should be achieved. This is what I would like to do and any assistance in alternative boot methods or creating a 'BIOS boot only server image' would be greatly appreciated.
Update: Installing rEFIt gives hope but no progress. Still boots disk with the same error:
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Select CD-ROM Boot Type : _
Update 2: Successfully installed Ubuntu 12.04.1 DESKTOP amd64+mac
. Going to attempt to install the server version from within Linux next.