1 - How to create disk.info file?
2 -Yes I was doing this way but I have USB disk drive with hundreds (if not thousands) of directories.
3 - Bubbles still showing up as I hover pointer over icons on desktop
In settings>MUI I set bubbles as rectangle, in settings>ambient MUI as comic bubble.
Bubbles show as comic bubbles so it is ambient mui issue, not global mui.
Anyway in both mui's 'quick help' is unchecked. (saved,rebooted, still the same...)