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:ENER AL SYSTEM OPERAT I ON
2.9 -- ather Available Commands
execution time, and the capability
oT
string
substitution,
permits
an
almost
unlimited
number
of applications to be
handled
by
a
CHAIN
file.
Chapter
6
contains
the
complete
description of the
CHAIN
command.
2.9.11 REPAIR --
System table checking
The
REPAIR
command allows the user to check and repair a
malrunctioning or a non-functioning
MDOS
diskette.
Errors in
the
system
tables
can
be roundJ
identiried,
and corrected
with
this
command.
Since
MDOS
performance
is
directly
related to the correctness of these system tables,
the
REPAIR
command is a
use~ul
diagnostic utility_
Chapter 22
contains
th e c omp
1
ete d esci' i
p
t i on
0
r
th e
REPAIR
command.
2. 9. 12
DUMP -
Dis
k
e
t t e sec tor dis
P 1
a y
The
DUMP
command allows the user to examine the entire
contents oT any physical sector on the diskette.
The
sector
can be displayed on either the system console or the printer.
The display contains
both
the
hexadecimal
and
the
ASCII
eq,uivalent
of
every
byte
in the sectoT'.
The
DUMP
command
allows opening of riles so that they can
be
examined
using
logical
sectoT'
numbe~s.
Sectors
can also
be
moved into a
tempora~~
burfe~
~he~e
changes can be applied
befo~e
they
a~e
w~itten
back
to diskette.
Chapter
11
contains the complete
d"escTiption of the DUMP command.
2.9.
13
FORMAT -- Diskette
refo~matting
The
FORMAT
command
attempts
to
~ewrite
the
sector
addressing
info~mation
on damaged diskettes.
The command can
be used
to
reformat
either
Single-sided
or
double-sided
diskettes;
ho~eve~1
double-sided diskettes must be rormatted
~ith
this
command
befo~e
they
can
be
used
with
MDOS.
Single-sided
diskettes
usually
come
pre-formatted
in
a
compatible
ro~mat.
The FORMAT
command
will
only
Ulork
on
systems
that
are
ope~ating
at
one
Or
the
standa~d
clock
rreq,uencies of
1
MHz}
1. 5
MHzl
o~
2
MHz.
Chapter
15
contains
the complete descT'iption of the FORMAT command.
2.9. 14
DOSGEN --
MDOS
diskette generation
The
DOSGEN command allows specialized
MDOS
diskettes to
be prepared.
Diskettes that have bad sectors can have
those
sectors
locked
out
so
that the diskette can be used in an
MDOS"
environment.
DOSGEN
will a"lso create
all
system
tables
and
files on the generated diskette.
The DOSGEN command can
be used to generate system diskettes on
either
single-sided
or
on
approp~iately
formatted
double-sided
diskettes.
Page
02-28
" /
"
...,/'
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