IBM 5150 Manual To Operations page 95

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Information on a diskette can be quickly located by its
sector and track numbers-just as an address number
(sector number) and street name (track number) are
used to find a particular house in a town.
Normally, you won't have to know about an
information's sector and track numbers-DOS takes care
of that for you. You give your information a name,
called a filename, and DOS assigns it to a place on your
diskette.
"Files and Filenames" are discussed after we tell you a
little more about protecting the information on your
diskettes-especially your DOS Diskette.
Careful Does It
Be careful with your diskettes. See Section 4 for
information about handling your diskettes.
We'd like to emphasize these things here:
Do not touch the exposed recording surfaces.
Protect the diskettes from dust by putting them
back in their envelopes as soon as you remove
them from the diskette drive.
Store often-used diskettes in their envelopes.
Don't lay heavy objects on top of them. If you
stand them on edge, make sure they aren't bending
or sagging.
Store seldom-used diskettes in storage boxes,
away from heat and magnetic field sources such as
telephones, dictation equipment, and electronic
calculators.
Because each piece of information occupies such a
tiny spot on the diskette, small scratches, dust,
food, or tobacco particles may make the
information unusable.
Take care of your diskettes because running your
computer without programs and data is like running
your car without gasoline.
DOS 3-21

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