TehGhodTrole ~ 84 god bless you ..I'm 51 and every bone in my body hurst at times.
Anyway I thought to myself after i posted my answer. He's gonna wanna kill me i forgot to tell him I took out Mac OS from the one drive with a fresh install by unplugging from the motherboard my Snow Leo drive, then plugging it back in after a fresh clean wipe of the one drive. Like you said exactly on install I missed the oportunity to put the grub on a different parititon than where "it" put it. Now i have Linux Mint on one drive and mac os on another, I can boot into either drive by going into BIOS and specifying which drive to boot first, but either choice I make, won't let me choose an OS on the bootloader screen. Both bootloader compete for for top slot I guess.
The wierd thing is , is that if I use linux as my first boot device, it boots into linux fine and even mounts, my Snow leo drive under 'computer' where it lists all your drives. but if I let Mac OS be the first boot device, When the OS loads up before the desktop it gives me a message that it shows an unreadable disk it can't mount. Gives me a choice weather to initialized (wipe it clean), ignore it, or report it. So I choose to ignore it then the finder loads & Mac OS runs but just can not or will not read the linux drive, but linux reads the Mac drive.
I'm wondering if I can get into the Mac drive from linux and erase the bootloader (chameleon) partition from the Mac drive, will grub on the linux drive give me a choice of which OS to run, from the linux drive... then I can turn around and just buy a relatively cheap extra HD and use it for back up storage.
But I'm not going to delete any partitions just yet until I back up both OS'es, cause i got Linux running sweet right now, and don't want to lose any of all the tinkering I did with it.
So I'll let you know how my test turns out, if it works or not, then maybe if anyone else is interested, there was another guy asking on this thread about it too, we'll know for sure that grub will mount and let a Mac drive work from the bootloader screen, as long as it is on a separate drive...