I downloaded the entire 6.2 distro, and rebooted with a floppy to upgrade my Redhat 6.1 *only* system. Everything was fine until I selected upgrade as the install option, and the installer went to look for the RPMs. I looks like it is mounting the existing partitions, and then trying to mount the partition where the RPMs are. Meaning that /dev/hda6 is trying to be mounted twice. Is the local install option not supported for upgrades? I didn't find any docs to say one way or another.
*** This bug has been marked as a duplicate of 10401 ***