• Set Startup is an alternative to Apple’s standard Startup Disk control panel. Its main advantage is that you can change your startup disk even if the new one is not currently mounted on the desktop. The disk is chosen by SCSI ID, where SCSI 0 usually represents your Mac’s internal hard disk.
• Set Startup has a complete online documentation you can access with the “Info” button in the main dialog. You may save it as a text file and read or print it with a text editor.