You can physically protect a diskette (write-protect it) so that data cannot be erased or overwritten. Once you have write-protected a diskette, additional information cannot be saved on it. When you no longer want to protect the information on a diskette, you can change it back to write-enable status and once again write and store information on it.
Turn the diskette upside-down and find the write-protect tab.
Push the tab away from the diskette's edge as far as it will go.
Use a ballpoint pen or other implement. When the notch is covered, the diskette is write-enabled.
You can now write to the diskette. If the diskette hasn't been formatted, see:
If you want to change the diskette to write-protect status, see: