Apple ColorLaserWriter 12/600PS - Manual (Page 168)

12 Replace the two screws that hold the controller board in place.
You’ve completed installing a hard disk in the printer. Next you must initialize
the hard disk before you can use it.
Initializing hard disks
After connecting an external or internal hard disk to the printer, you must
initialize the disk before you can use it. Macintosh external hard disks already
initialized in the HFS format can be used as is with the printer.
If you have a Macintosh, you can use the Apple Printer Utility to initialize a
hard disk connected to the Color LaserWriter 12/600 PS. See “Initializing a
Hard Disk Connected to the Printer” in Chapter 2. If you use an IBM PC or
compatible computer, use the Font Downloader in the Windows Setup dialog
box to initialize a hard disk. See Chapter 7 for more information about
initializing disks and downloading fonts.
IMPORTANT Initialize a hard disk only once from a Macintosh or from an
IBM PC or compatible computer. After you initialize the disk, it will be able
to store font information from Macintosh computers and from IBM PC or
compatible computers. Initializing the disk again from either a Macintosh or
IBM PC or compatible will erase any font information stored there.
Your printer’s startup page will not show that a hard disk is installed until you
initialize the hard disk.
143 Installing Options