I'm way late to the party here but I have a v5.1 with a 2GB card, formatted with Apple HD SC Setup 7.3.5 and then installed 6.0.8 on it. Won't boot.
Then I did this: http://www.codesrc.com/mediawiki/index.php/Mac_Plus and it worked. :) It booted.
Make sure "Enable Unit Attention" is OFF...
K so I had the same issue and found this thread. I have a v5.1 with a 2GB card, formatted with Apple HD SC Setup 7.3.5 and then installed 6.0.8 on it. Won't boot.
My buddy found this for me: http://www.codesrc.com/mediawiki/index.php/Mac_Plus and it worked. :) It booted.
Make sure "Enable...