Epson EQUITY 386SX/16 PLUS - Manual (Page 64)

Write-protecting Diskettes
You can write-protect a diskette to prevent its data from
being altered. When a diskette is write-protected, you can
read it and copy data from it, but you cannot store new data
on it or delete any files it contains. If you try to change data
stored on a write-protected diskette, MS-DOS displays an
error message.
To write-protect a diskette, cover the small,
rectangular notch (shown below) with an adhesive write-
protect tab. Write-protect tabs usually are included in a new
package of blank
diskettes.
notch
write-protect tab
To remove the write protection, peel off the write-protect tab.
3-12
Using Your Computer