Apple Macintosh PowerBook 180 computers - Manual (Page 283)

A high-density (1.4 MB) disk you use with your PowerBook
computer is not recognized by another Macintosh.
n
Some disk drives cannot recognize high-density disks. Try
inserting an 800K or 400K disk in the disk drive of the other
Macintosh. If that works, copy your files to an 800K disk or a
400K disk. If you regularly plan to use floppy disk drives of
different types, use the lower-capacity disks in all drives.
You can’t eject a disk from a floppy disk drive.
n
There may be a temporary mechanical problem with the disk
drive. Restart the computer and hold down one of the
trackball buttons while the computer starts up. If that doesn’t
work, carefully insert the end of a straightened paper clip into
the small hole near the disk drive’s opening, and push gently
until the disk is ejected.
A message says that a disk is not initialized—but you
know that it is.
n
The disk may not be seated properly in the disk drive. Eject it
and try inserting it again.
n
The disk may be damaged. If you insert another disk in the
drive and the message does not appear, you can assume that
the original disk needs repair. See Chapter 8 for information
about recovering information from a damaged disk. If the
second disk is also not recognized, take the computer or disk
drive to an authorized Apple service provider.
You can’t delete a file on a floppy disk.
n
The disk may be locked. Unlock it by sliding the tab so that it
covers the hole at the corner of the disk.
n
The file may be locked. You can unlock it in its Info window
(choose Get Info from the File menu). Or you can hold down
the Option key while you choose Empty Trash from the
Special menu.
n
An application program may be using the file. You’ll need to
quit the program.
Quick Reference 267