Apple Macintosh PowerBook 145 - Manual (Page 263)

A message says that a disk is not initialized—but you
know that it is.
m The disk may not be seated properly in the disk drive. Eject it
and try inserting it again.
m 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.
m The disk may be locked. Unlock it by sliding the tab so that it
covers the hole at the corner of the disk.
m 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.
m An application program may be using the file. You’ll need to
quit the program.
You can’t save or copy files onto a floppy disk.
m The disk may be locked. Unlock it by sliding the tab so that it
covers the hole at the corner of the disk.
m The disk may be full. Delete files you no longer need or use a
different disk.
See Chapter 8 for more information about working with disk
drives and disks.
Quick Reference 247