Tandy TRS-80 Owner Manual & Programming Manual page 22

A
GARGLED
UP
DISK
We
suggest
you
regularly
make
a
backup copy
of
any disk
which
contains
important
programs
or
data.
This
way
you
won't
have
to
worry about
los-
ing
them.
Also, since a disk
can
actually get
worn
out
from
too
much
use,
it's
a
good idea
to
make
a
backup
copy of
an
old disk
on a new,
unused
disk.
Then,
when
the
Computer
begins
having
its
problems
reading
and writing
to
the disk,
you can
use your
backup
copy.
Want
to
make
a
backup
copy?
Get your two
disks
ready:
1.
Your "source" disk
—
This
is
the disk
you want
to
duplicate.
Use any
disk
which
has
files
stored
on
it.
If
you're just getting started, use the disk
which you
worked
with
in
Chapter
2.
2.
Your
"destination" disk
—
This
is
the disk
which
you
want
to
be your
duplicate copy.
Use
a blank
disk
or, if
you've
been
using your
disk
system
for a
while, use
any
disk
which
contains
files
you won't need
anymore.
After
making some
noise
while
it
reads
a portion
of
your "source"
disk, the
Computer
will print:
\'ote
:
Everything preciously
on your
destination dish
it-
ill
be erased.
It
will
be replaced with
all
the data
i
your source
disk.
If
your "destination" disk
is
blank,
you must
first
format
it.
Remember
how?
Insert
it
in
your
disk drive,
shut the
door,
and
type DSKINio
CENTER)
.
Now make
the
backup
copy.
The
procedure you
fol-
low depends
on whether you have one
disk drive
or several.
Backup
with
One
Disk
Drive
If
you have
only
one
disk
drive,
it
will
take you
about
five
minutes
to
make
a
backup
copy.
Insert
your
"source" disk
in
your disk drive
and
shut
the
DRIVE DOOR.
Type
OIR
(ENTER)
to
see
which
files
you
will
be copying.
Now
start
the
backup
procedures. Type:
INSERT DESTINATION DISKETTE AND PRESS
CENTER;
Take
the "source" disk out
and
insert the "desti-
nation"
disk.
Shut
the
DRIVE DOOR.
Then
press
(ENTER).
You'll
hear
some more
noise while the
Computer
"writes"
some
things on
the "destina-
tion" disk.
Then
it
will print:
INSERT SOURCE DISKETTE AND PRESS
CENTER)
The Computer
will
have you continue switching
disks
until
you have
copied
everything from your
source
disk.
During
this process,
make
sure
you
insert the correct disk
and
insert
it
properly.
When
you've
finished,
the
Computer
will print
the
OK
message on
your
screen.
To
make
sure
BACKUP
worked,
you
can
insert
your
"destination" disk
and
type
D
I
R (ENTER)
.
Backup
with
More Than One
Disk
Drive
If
you have more than
one disk
drive,
backing up
a
disk
is
much
easier.
It
will
take about two
minutes.
Insert
your
"source" disk in drive
and
your
"des-
tination" disk in drive
1
(Chapter
1
shows
how
to
label
your
drives).
Then
type:
BACKUP
CENTER)
BACKUP
TO
i (
ENTER)
You
will
hear
some
noise as the
Computer
backs
up
the contents
of
the disk
in
drive
to
the disk
in
drive
1.
When
it's
finished,
it
will
print the OK
mes-
sage.
You
can then
make
sure
BACKUP
worked
by typing DIRi
CENTER)
.
You
can use
different drives,
if
you want. For
instance:
BACKUP
1
TO
(INTER)
backs
up
the contents of the disk
in
drive
1 to
the
one
in
drive
0.
14