When managing Classic Startup preferences, a Classic System Folder may or may not be specified. If no Classic System Folder is specified, the "default System Folder" is used. The "default System Folder" refers to a single Mac OS 9 System Folder on the startup volume.
If no Mac OS 9 System Folder is on the startup volume, or if multiple Mac OS 9 System Folders are on the startup volume, the user sees the following alert message when starting Classic:
"Classic Startup found no system folder on the boot volume from which to start classic."
If there are multiple Classic System Folders installed on the startup volume or you wish to use a Classic System folder installed on a different local volume, use either of these solutions:
Solution 1
Specify which Classic System Folder clients will use in Workgroup Manager.
Notes
1. If you use the Choose button to do this, the volume that contains the Classic System Folder must have the same pathname at the client computer as it does on the administrator's computer. You must select the file "System" in the System Folder (though the resulting pathname will end with "System Folder", not "System Folder/System" as might be expected).
2. If the administrator and client computers have different paths to the Classic System Folder, then you must type the pathname instead of using the Choose dialog. Remember that paths on the startup volume start with root ("/") but that paths for secondary volumes must be preceded by "/Volumes/". For a secondary volume named "Other_Stuff" that contains the Classic System Folder you would type this, for example:
/Volumes/Other_Stuff/System Folder
Solution 2
Set "Manage these settings" to "Never" in the Startup tab, and allow access to Classic preferences.
Note: Any Classic preference that is managed cannot be edited by a managed user, so it may not be necessary to prevent access to the Classic preferences pane in System Preferences when managing Classic preferences.