To
run the application program. Jblkw the instructions
in
your Model
4/4P Disk System Owner's Manual.
Backing Up
a Hard
Disk
To safeguard the information stored on hard disk, you should
periodically
make a
backup
copy on
floppy
diskettes.
To do so,
lullgw
ihws« steps;
1. Start up or re-set the computer with the Boot Diskette.
2. Look at the directory of the hard disk to determine the total
amount ol space taken by the
files
on thai
disk.
10 do
this,
type the 01 R command followed by the
hard
disk
drive
number
and ihen (l,S). This eommana,
for example, displays
the total
space
consumed
by the
files
on
Logical
Hard
Disk Drive 1:
DIR :1 <I,S)
CENTER)
Al
U
ie bullum ofthe Ufciplyy is
Hits message Spa lb
=
futluwed
by the space taken by the liies (in
kilobytes,
or
"kbytes").
Note: Look at
the
F i L e Size column on the display If any
individual file exceeds 174K bytes, you need to use HDCOPY4,
instead ol BACKUP, to copy that hie. When backing up the
ol her files, use the QU E HY opt ion of BACKUP to skip that
f
1 1 s,
(See Chapter 6 of this manual for information on HDC0PY4,
See
your
Mode! WP
Disk System
Owner's
Manna} for
infor-
mation
on
QUERY.}
a
Calculate
the
number
of
TRSDOS-forrnatted
floppy
diskettes
yuu nyetl.
Tj
Ut>
Hiis, divide
the
"kitdl
spate uoiisunied"
liyuiu
by 174, (A newly formatted floppy diskette can held about 174K
or 178,176 bytes.) Round the result to the next higher whole
number.
For
example, if the Space
=
message shows the total space
to be 435K, you need 3 floppy diskettes;
435
/
174 =
2.5 (rounded
Of)
=
3)
4. Format the number of floppy diskettes you need and one extra
in
case
of
a
problem.
Then
place one
of
the
w
rite-enabled,
fun i sallt^J
dis ket
lea
1 > a f I
v^py J
i ive. E 1
1
te r the BACKU P
W*
i i-
mand.
Trie following
command
copies
each file on
source drive
to the floppy diskette in destination drive:
BACKUP
source drive destination drive
LENter)
24
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