Apple Power Macintosh 8600 - Manual (Page 147)

m System software is not installed on the startup hard disk, the system
software is damaged, or the hard disk is not working properly.
Follow the instructions in “Testing and Repairing Your Hard Disk,” in
Chapter 11, “Diagnostic Techniques,” to test your startup hard disk and
repair any damage. If repairing the disk doesn’t help, reinstall system
software on your startup hard disk. For detailed instructions, see
“Installing System Software” also in Chapter 11.
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.
147 Solutions to Common Problems