Thanks very kindly for that link, it looks very detailed, and, uh, complicated installation process. . . and might explain why the install has not been as simple as it might be. It'll take some time for me to read through the whole instructions to understand what mr Rod is talking about . . . and then try it out. I'll post back when I figure out whether I need to go that way or whether it might be simpler, etc. I definitely don't need Windows to be installed alongside the OSX & Linux systems . . . .
Just to follow up on the continuing saga of getting LMDE loaded into my MBP . . . . So far using the links that were provided here gave me maybe a step closer in some ways, but still not able to boot into it. I got a suggestion to look at a link on "Ubuntu & OSX" from a John Atilano?? blog showing how to use the Ubuntu installer and some if it was applicable and others not. The exact problem I still believe is in the GRUB bootloader not loading into the right place; and the Ubuntu installer seems to give the option for what should correctly be selected "/dev/sda3" whereas in LMDE installer the choice is only "/dev/sda" or "/dev/sda1"--which is where the rEFIt app is loaded, and that's where I put it this time.
And,after the install I went into the rEFIt partition manager and "synchronized" the partitions and then I could select Linux or "Windows" as he describes in his blog piece and it loaded the word "GRUB" filling the entire screen; I then shut the computer down and rebooted and then got the single word "GRUB" with an underscore flashing next to it, but it wouldn't load the Linux OS. In another the link from "rodsbooks" recommended by "spandey" the instructions, the guy there used "gdisk" to try to set up a partition or some kind of "hybrid MBR" which would be where the GRUB bootloader was supposed to go; and then I downloaded "SUPERGRUB2" which was supposed to be to clean up the "hybrid MBR" afterward--but using those rather complicated instructions I got stalled at the "gdisk" part--where it wasn't able to run the suggested "sudo gdisk" command in Terminal, and essentially that ended the ability to partition the disk to make a partition for the GRUB bootloader . . . and ending the ability to use those instructions .
It does show that 5GB of data is loaded, so it's "there" . . . and the partitions are "synchronized" . . . just not booting. Thanks for any thoughts that might help get LMDE going on MBP.
MacBookPro5,4 2.53Ghz Core 2 Duo 4GB Ram LM16 MATE 64-bit w/ non-humorous Floating Targets!!!