Place this Application into the Startup folder in your System and restart your Mac, works best on a 9" screen, and an Animated Icon will replace your Start-up Disk's Icon.
You can Change the style of the Icon from the choices in the menu. This application needs to run under multiFinder or System 7.0.
Years of testing done under System 7.0, running in a 4 megabyte Mac SE.
All Care and No responsibility ;) ;) :X
$30 for 3 disks of original, and more usefull ? software