Apple Macintosh Performa 5400 Series - Manual (Page 66)

Shut down your computer, turn off all external SCSI equipment, and
disconnect the first SCSI device in the chain from your computer’s SCSI
port. Then restart the computer. If the computer starts up after you
disconnect your SCSI equipment, refer to the manuals that came with the
equipment and to Chapter 3 of this manual for information on the proper
way to connect SCSI equipment and assign SCSI ID numbers.
If you have a printer connected to your computer’s SCSI port, make sure
your printer is connected properly. Most printers connect to the printer
port, not the SCSI port. Check the manuals that came with your printer for
information on how to connect it properly.
m System software is not installed on the startup hard disk, the system
software is damaged, or the hard disk is not working properly.
Start up your computer using the Macintosh Performa CD: Performa
Software. For instructions on how to start up your computer from the
CD-ROM disc, see “Starting Up From a CD-ROM Disc” in the section
“Repairing a Damaged Disk” later in this chapter. Then follow the
instructions in “Repairing a Damaged Disk” later in this chapter to test
your startup hard disk and repair any damage.
If repairing the disk doesn’t help, follow the instructions in Chapter 7,
“Installing or Reinstalling Your Software,” to reinstall system software on
your startup hard disk.
A disk icon with an X appears in the middle of the screen and a floppy disk is ejected
from the disk drive.
This icon indicates that the floppy disk you tried to start up from is not a
startup disk. (When you turn on your computer, it looks first in the floppy
disk drive for a disk containing system software. If the disk in the drive does
not contain system software, the computer ejects the disk and looks on its
internal hard disk for system software.)
Wait a few seconds. The computer should start up from its internal hard
disk. Make sure you insert floppy disks only after the computer has begun
starting up.
65 Troubleshooting