Apple Macintosh PowerBook 180 computers - Manual (Page 38)

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Hold down the power button for 5 seconds.
When you let go, the computer turns itself off. Turning the
computer off with the power button erases the contents of a
RAM disk.
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Restart from a floppy disk.
1. Insert the Disk Tools disk into the floppy disk drive.
2. Press the power button.
If the computer turns on, there is probably a problem with
your hard disk. You may be able to fix the problem yourself
(using the Disk First Aid program or another disk repair
program; see the chapter on disks in the reference section).
Or you can take the computer to your authorized Apple
service provider.
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If you have an Apple HDI-30 SCSI Disk Adapter cable,
connect your PowerBook to a desktop Macintosh and
start it up as a SCSI disk.
Your PowerBook can be connected to a desktop Macintosh
and used as an external SCSI disk drive.
The procedure has two parts. First you need to connect your
computer to a desktop Macintosh. Then you need to reinstall
system software on your computer’s hard disk. Chapters 14
and 6, respectively, contain specific instructions.
22 Chapter 1: Setting Up Your Macintosh PowerBook