Apple Macintosh PowerBook 150 - Manual (Page 20)

5 Insert a high-density floppy disk into the disk drive.
Do not use the Utilities floppy disk that came with your computer.
6 Follow the instructions on the screen until a message tells you that you’re finished.
Insert a new disk whenever the screen messages tells you to. As you fill each
disk, make a note of the name displayed on the screen. The name will
disappear as soon as the disk is ejected. Then immediately label the disk so
that you know what its contents are later.
7 Follow steps 3–6 again, but this time click the Copy all Files button.
8 When you’re finished, be sure the floppy disks are properly labeled and locked, then
store them in a safe, cool place.
As time goes by, you will store more information on your computer. You
should back up your hard disk at least once a month. (You may want to
recycle your backup disks so that you don’t need to buy a new set every time
you back up.)
Insert metal end first, label side up.
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