The 1.0 version of Apple Hard Drive Updater OS9 for Mac was available as a free download on our website. The software lies within System Tools, more precisely General.
From the developer:
Apple Hard Drive Update 1 improves the longevity of some hard drives shipped in certain Power Mac G4 computers, including: Power Mac G4 Cube Power Mac G4 (AGP Graphics) Power Mac G4 (Digital Audio) Power Mac G4 (Gigabit Ethernet) Power Mac G4 (Quicksilver) Most drives do not need this update. You can check the drives in your computer by running this update.
You may want to check out more software for Mac, such as Apple Lion Recovery Update, which might be related to Apple Hard Drive Updater OS9.
Drivers
System Optimization