> Why the Boot directory is visible on my desktop.

This partition is visible because the 'automatically mount partition' option is enabled for it in HDConfig. Simply disable the option to keep the partition from auto-mounting.

> I'm curious to know what hardware you all are using to run MorphOS

When 2000 registrations were reached 3 years ago, the MorphOS Team published statistics about the registered machines. Unfortunately, they didn't do the same when 3000 registrations were reached a year ago, as that would certainly have shown a wider adoption of G5 machines (support for these was still limited 3 years ago).