Brother BES-1261BC - Manual (Page 9)

7 BES-961BC • BES-1261BC
Protecting data in floppy disks
Write-protection is available for a floppy disk to prevent undesired data deletion.
A write-protected disk is read-only. It is recommended to provide write-protection
for disks which contain important data.
To do so, slide the write-protect notch to open the slot as shown below.