Download Print this page

Motorola EXORdisk II User Manual page 215

Advertisement

CHAPTER 22
22.
REPAIR
COMMAND
The
REPAIR command
allo~s
the
use~
to check and repair a
malfunctioning
o~
a
non-functioning MDOS
diskette.
Errors
in
the
s~stem
tables can be found,
identified, and corrected
with
this
command.
Since
MOOS
performance
is
directly
related to the correctness of these system tables,
the REPAIR
command is
a
useful diagnostic utility.
The
REPAIR
command
works
with
either
single-sided
or
double-sided
MOOS
diskettes.
22. 1
Use
The REPAIR command is invoked with the following command
1
ine:
REPAIR
[:<unit:>J
whe~e
<unit>
is the logical unit number on which a diskette
that is to be IIrepaired" resides.
If
no
<unit:>
is
given,
logical unit number zero will be used as a default.
The
REPAIR
command runs through five different phases:
1.
ID
I
LCAT, CAT, and Bootblock sector check phase,
2.
Directory sector check phase,
3.
Retrieval Information
Block check
phase,
4.
CAT regeneration phase, and
5.
CAT
rep
lacement phase.
Each
of
the
different phases is described in detail in the
following sections.
REPAIR
progresses from each phase to the
next
carrying
along information that was obtained during
a
prior phase.
If
errors are discovered,
the operator will be
noti~ied
via
the
system
console.
IF
REPAIR can fix the error; the
ope~ator
will also be asked ir the error should be
corrected
on
the
diskette.
Thus,
the operator has complete control over any
changes that are made to
the
diskette.
The
operator
can
suppress
any
action
that
may
be
suggested by the
REFAIR
command as the means for correcting an error.
The amount of knowledge about the MDOS
tables
that
is
Page
22-01

Advertisement

loading

This manual is also suitable for:

Exordisk iii