Blessed System Folder

A blessed System Folder is a properly-working, valid System Folder which will start up a Macintosh.

Appearance
In System 1 through 6.x, a valid, blessed System Folder will appear with a small monochrome icon of a compact Mac on the folder. In System 7 through Mac OS 7.6.1, this icon was colorized. In Mac OS 8 through 9.2.2, the compact mac was replaced with a blue smiling Mac OS icon.

Minimum requirements
A blessed System Folder should contain the following items:

System 1 through 7.0.1 (including Tune-Ups)
From System 1.0 through 7.0.1 (with updates to System 7 Tune-Up 1.1.1 installed), the minimum requirements for a blessed System Folder included:


 * Finder
 * System file

System 7.1 and later
Beginning with System 7.1, an Enabler scheme was struck upon for newer Mac models. A valid System Enabler file was required in addition to the Finder and the System file for specific new model releases.

New World Macs
Beginning with System 8.1, New World Macs also required the following files:


 * Mac OS ROM
 * System Resources