IBM 2179, Руководство пользователя

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Write-protecting diskettes
It is possible to accidentally format a diskette or unintentionally write data to
it. Important information can be written over or lost. For this reason, it is a
good idea to write-protect important diskettes. You can read data from a
write-protected diskette, but you cannot erase or change the data.
Most 3.5-inch diskettes have a write-protect switch that can be used to prevent
data from being written to or erased from the diskette. If a 3.5-inch diskette
does not have a write-protect switch, it is permanently write-protected.
A write-protect switch is located on the back of 3.5-inch diskettes.
Write-protect
switch
v
To allow writing to the diskette, slide the switch so that the write-protect
window is covered.
v
To prevent writing to the diskette, slide the switch so that the write-protect
window is open.
Using a CD-ROM or DVD-ROM drive
Your computer has a preinstalled CD-ROM or DVD-ROM drive. These drives
can play back or read from a CD or DVD disc but cannot write information to
it. CD-ROM or DVD-ROM drives use industry-standard, 12 cm (4.75-inch)
CDs.
Follow these guidelines when using a CD-ROM or DVD-ROM drive:
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User Guide