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Disk
Format and
Files
You
can
store
programs and
then
easi-y retrieve
and
run
them
because
of
the
efficient
way
your operating
system
organizes
information
on
disks.
The two
carts
of
disk organization
are:
Disk
Format
• Disk Pies
Formatting prepares
disks
=or
information storage.
It
elides
disks
info
the parts
of
a
,:
filing
:
'
system:
cylinders, tracks,
s.ectors,
and
bytes.
II
also creates a directory
on
eac'i
cHsk.
You
can
store information
on
formatted
disks
only.
Any
disk
that
contains
an
application
program
or
operating
system
is
already
formatted.
The
blank
diskettes
you buy
in
a
Radio
Shack Computer
Center
are
not
formatted.
To
format a data
diskette
:
follow
the
steps
under
"Formatting Disks
11
in
Chapter
7.
'Topoy
D
:
skeite
System
Preparation.
,:
Disk
Files
&re
similar
to
=
he
files in
a
file
cabinet.
They can
contain
whatever you
put
in
them
programs, cata
:
information
and
each
fie
has
a
different
name.
Disk
files
usuaily
are created
through an
application
program.
Operating
Systems and
Application
Programs
Operating systems
are
programs
that
enab
:
e
you
to
operate a
computer. They
let
you manipulate
and
s'ore data,
contro
peripheral and use
application
programs.
Application
programs
heip
you perform
tasks
such
as
bookkeeping,
word
processing,
and program
develooment.
Operating
Systems
Your system
comes
with three
operating systems:
•
TRS-XENIX
TRSOOS-II
•
TRSDOS
2.0b
All
application
programs mus:
be
run
with
one
of
these operating
systems
in
Drive
or
on
Drive
4.
To
determine which ooerating
system
your
apolieation
program
uses
:
check:
Application
manual
Diskette
label.
The
laoel identifies
a
TRS-XENIX, TRSDOS-II,
or
TRSDOS
application
program.
If
a
system
is
no: given,
you
have
a
TRSDOS
apolication.
To
learn
more
about your
operating
systems
:
see
the
appropriate
manual:
TRS-XENIX
Operations
Guide
TRSDOS-II and
TRSDOS
—
TRSDOS-II Reference
Manual
15
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