Normally this can be controlled using the Energy Saver preference pane in System Preferences, and that should be your first resort in dealing with the problem, rather than this or any other third party software. However, some external drives (e.g. Western Digital's MyBook drives) do not respect the System Preferences settings, so for them an alternative like this is needed.
This applet simply creates a launch agent that tells OS X to touch a hidden file on the selected drive once more...
Note: MacUpdate Desktop and Finder report that this app is version 1.1; this is a result of the Automator version involved. The dev states this is version 1.4.
- Recompiled as an Automator app instead of an AppleScript app. This should solve problems where the app would not launch properly on some versions of OS X. (Note: On OS X 10.8 and higher, the more...
- OS X 10.5 or later