[bobtomay]

Color of the physical DVD - black is a retail version of Leo and will work - gray would be a disk that shipped with another Mac and would probably not work as they are system specific disks.

Sounds like you probably have the retail disk though. You need to repartition/format the hard drive. Once booted from the disk, on the menu go to Utitlities - Disk Utility. Select the drive on the left and in the Partition tab click on Options, select Guid Partition table and the correct format will be Mac OS Extended (Journaled).

[rodlittle]

In that case its Black with a supernova background in violet

[rodlittle]

The DVD is Black and bought from an Apple store

[technologist]

Originally Posted by rodlittle

...
You cannot install Mac OSX on this volume. To enable installation on this volume repartition disk as GUID Partition table
OK I should own up to the fact that I did upgrade the disk to a 500GB disk from the measly 90 it had, by copying everything onto the new disk and then swapping them. But that automatically formatted the disk into a journalled version

Please review the article below.
"You cannot install Mac OS X on this volume..." alert in Installer

The MacBook Pro is an Intel-based machine, which should have a GUID partition table. When you set up the new disk, you probably chose the wrong partition type.

Be sure you back up before re-partitioning the disk.