Since posting this, the final version has been released, and I have downloaded, and tried to install 13 different DVD's of Linux Mint 11. I have downloaded from different repositories, used different machines, different brands of media, and get the same end result. Failure to install. I have come to the conclusion that it is the machine. However, I did manage to install a CD, with the LXDE window manager, 32 bit. Most of the other distros will not show 16 gig of ram, but this one does. I would have preferred the 64 bit, but will settle with the 32. Mint is the BEST distro I have used since PCLOS. I am fixin to upgrade my main machine with a quad core processor, and 16 gig of ram, so I know I can install the lXDE version of Mint 11. I have several 500 gig spare HD's which I used to test various distros, and so far Mint has been the only 64 bit that won't install. Thanks to all who responded.