System Picker allows you to choose which System Folder to boot from,
if you have 2 or more System Folders on the Macintosh startup disk.

 * Top DL: System Picker version 1.1a3 from 1997 (from Apple Dev CD,
   Oct 1998).
 * 2nd DL: System Picker version 1.0b11 from 1991.
 * 3rd DL: System Picker version 1.0b10 from 1991
 * 4th DL: System Picker version 1.0b8.
 * 5th DL: System Picker version 1.0.1.
 * 6th DL: System Picker version 1.0.0.

> System Picker is a freeware utility that lets you pick which one of
> two or more System Folders on your hard drive will be active at the
> next startup. Kevin Aitken's little utility does this by "blessing"
> the system you select. (Blessing is Apple's name for selecting one
> System Folder as the active one.)
>
> The trick you must master before using System Picker is installing
> two or more copies of the Mac OS on your hard drive. The first and
> most important thing to realize is that your System Folder doesn't
> have to be named "System Folder" - you could call one "System 6" and
> the other "Mac OS 7."
>
> The second important thing to realize is that the Mac prefers to
> update an existing System Folder, so it will overwrite your other
> System if you're not careful. One way to work around this is to
> instruct the installer to perform a clean install, which renames the
> old folder Previous System Folder. This option is not readily
> accessible on older versions of the System, but if I recall
> correctly, you can access this option by holding down the option key
> while launching the installer.
>
> Other ways to protect your old OS from the new installer are (1) to
> copy it to another drive or even a floppy disk, (2) rename the
> System Folder and compress it using StuffIt, and (3) rename the old
> System Folder and disable it by moving the System or Finder out of
> the old System Folder.
>
> I have used System Picker successfully to choose among System 6.0.8,
> 7.5.5, and 7.0.x or 7.1 on my Mac II a few years back. Although it
> having multiple systems on a single hard drive is not recommended by
> Apple and can sometimes confuse the computer, I have never had any
> problems when using System Picker.
>
> \- excerpt taken from Dan Knight's Low End Mac article, [The Old
> Grey Mac][1]

Compatibility
Architecture: 68k

  [1]: http://lowendmac.com/oldmac/compact3.html

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