Multibooter is the code name for the future "System Disk" control panel. It started as a crude replacement for the Rhapsody control panel, and the non-Apple "Bootvars" control panel. It recently underwent a HI review, and will be changing significantly to present a more understandable UE to the user. Unfortunately it's a lower priority than many of the installation tasks underway.
Multibooter's purpose is to install the latest OpenFirmware patches for your machine, and specify a boot device for OpenFirmware.
Multibooter can be used as an app, an extension, or both.
If the extension is installed in the booting Mac OS System Folder, the system disk selection panel will appear at startup if <option> is held down during boot. Rhapsody DR2 installs a Secondary Loader that restores Mac OS booting when <option> is held down, so you should hold down <option> from the boot chime until you get the system disk selection dialog. If you click "save" with a Mac OS volume selected, the multibooter will set your machine to boot Mac OS from then on, and continue booting the current Mac OS system. If you select a Rhapsody volume and click "save", the machine will reboot and begin booting Rhapsody from the selected volume.
The application version presents the system disk selection dialog. You can select a system disk that will be used when the machine is next restarted. Clicking "save" saves the settings, you must reboot to begin boting from a newly selected disk. You can alternately hold down <option> while clicking save to reboot immeadiately. Clicking "save" with a Mac OS volume selected will set the machine to boot Mac OS by default, but you must use the Startup Disk control panel to specify the Mac OS boot disk. This is the closest thing to doing nothing, there is no quit button yet.
