A Long Adventure: Repairing Ultra-Rare NTSC Amiga Ultima 6
When I tried to install to hard drive there were read/write errors from the Install Disk, and they were for files that were critical for the game to launch. I could see the game was running a bit slow on the Phoenix’s 7Mhz, so I put the Repaired original Ultima 6 install disk in my accelerated A2000’s floppy drive. I made my character then clicked Journey Onward., and after a few moments, I was looking at the full game and talking to Lord British!As a result, I now have a reliable way for ANYONE to install Ultima 6 to their NTSC machines, and as long as they overwrite the same 5 files (which I shall provide soon), they, too, can convert their Ultima 6 to NTSC mode which in theory will run ever so slightly faster than the PAL version.
Source: amigalove.com