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RE?AIR COMMAND
22.2 -- ID;
LCAT~
CAT! Bootblack SectoT Check
display the message
WHICH SECTOR RANGE IS TO BE LOCKED OUT?
The operator can respond with a carriage return
to
indicate
that
no additional sectors aTe to be locked out.
Otherwisel
the operator can respond
with
a
range
of
sector
numbeTs
entered in the
~Qrmat
mmm-nnn
where
tlmmm"
and "nnn" al'e hexadecimal numbel's of sectors that
start
on
a
cluster
boundary
(sector
number
is
evenly
divisible
by four).
I~
an illegal sector number is entered;
or iT the starting number is greater than the ending
number,
the
above
mes~age
will
be
redisplayed until the
ope~atcr
enters a valid range or a single carriage
retu~n.
Only
one
contiguous
range
oT
sectors
can
be locked out.
The same
cautions described in Chapter
10
regarding
user-locked
out
sectors
apply
here;
however,
in
tnis
easel
since
Tiles
already reside on the disk with allocated spaceJthe
locked
out
sectors must not conflict with any files.
If
a diskette
did
not have user-locKed out
sectors
before,
then
sectoTs
must
not
be locked out during the REPAIR process since they
could c9nflict with sectors already
allocated.
The
REPAIR
command
is
not
intended
to
be
used for
tne normal lockout
procedure;
that
is
tne
runction
of
the
DOSGEN
command
(Chapter
10),
If
a
diskette did have sectors locked outl
then
t~e
identical sectors must be locked out by the
operato~
again here.
Arter
the
LCAT
has
been rebuilt, or if it was
good
to
begin with,
the
Cluster
Allocation
Table
(CAT)
will
be
checked.
If
the
CAT
sector cannot be read,
the following
message
~ill
be displayed:
**PROM I/O ERROR-STATUS=31 AT 2E8A ON DRIVE l-PSN 0001
C.A.T.
READ ERROR
WRITE TO DISK TO ATTEMPT TO CLEAR ERROR?
The operator must respond with either a "Y" or an "Nil to
the
las t
q,
u est ion.
I fan .. N
II
i sen tel' ed, REP A I Rca n not con tin u e
to check the other system tables since subsequent checking is
based on the validiy of the CAT.
Thus the message,
DISK IS NOT FIXABLE
is displayed and control returned to MDOS.
If a "V" response.
i s
9
i
ve n
J
REP A I R
wi
1 1 a t t em p t tor e lIIr i t e the CAT sec tor.
I
r
an
error
develops
during
the
write,
the
sector will be
considered unfixable (as will
the
diskette).
The
mess~ge
shown above will be displayed and MDOS given control.
If
the
CAT
sector
is
readable.
or
if
rewriting the
Page
22-06
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