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GENERAL SYSTEM OPERATION
2.8 -- Typical Command Usage Examples
2.8.10
BACKUP
~-
MDOS
diskette creation
Ne~
diskettes, or diskettes never before usad on an MDOS
system}
must
first
be
prepared
for
use
with
MDOS.
The
quickest way to generate
a
new MDOS diskette is
to
use
the
BACKUP
command.
Usually, a copy is retained of the original
system diskette that was snipped with the EXORdisk II or !I!.
This
diskette
should
be
used
to generate subsequent
MDOS
diskettes.
It is recommended that the original diskette
not
be
used
for
development purposes.
It should serve only as
the master copy from which all other diskettes are generated.
A
blank
or
s.cratch diskette should
be
placed into
drive
one.
The master system diskette should be resident in drive
zero.
The following command line will then cause
a
complete
copy of the master diskette to be created:
BACKUP
iU
The
"U"
option
specifies
that
the
entire surface of the
diskette in drive zero is
to
be
read
and
copied
to
the
diskette in drive one.
This process ensures that all sectors
on the new diskette can
be
written
to.
Once
the
BACKUP
command
has
been
invoked
in this way,
it will display the
following message:
BACKUP FROM DRIVE 0 TO 1?
to which the operator should respond with
a
"y".
response
will
terminate
the
BACKUP
processJ
. dis k e t t e.
i
n d r
i
ve
0
n e
i
n ta ct.
The
II
Y
II
res p
0
n s e
the diskette copy to take place.
Any
ether
leaving the
wi
11
cause
As
an
added
precaution,
the
two diskettes should be
compared against each other
after
the
BACKUP
command
has
completed.
This
diskette
veriTication is invoked with the
following command line:
If
any
messages
are
processJ
the
diskette
system diskette.
BACKUP iUV
displayed
during
the
veri~ication
in drive one should not be used as a
Chapter
3
describes
the
BACKUP
command
in
detail.
Chapter
10 describes an alternative method of generating
new
system diskettes.
2.9 Other Available Commands
Several other powerful commands are included
with
each
MDOS
diskette.
These
commands are not needed initially in
Page
02-25
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