I currently run 10.9.4 but need always 10.6.8. I use two different releases of Chameleon (2.0 rc5 and 2.2 svn) to boot each other on separate disk.
Using F12 in BIOS isn't really practical and I'd like to install the OS on an unique disk and choose the right OS with bootloader. But Cham 2.0 doesn't boot 10.9 and Cham 2.2 doesn't boot 10.6
If you have an idea, thanks