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HP 250 - Page 133

HP 250
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In
Case
of
Difficulty
An *
appears
in
place
of
the
sector
number
when
successive
sectors
of
a
track
cause
errors.
When
testing
a
flex
disc,
head
o
is
the
bottom
side
and
head
1
is
the
top
side.
When
WITH RECOVERY
is
selected,
the
test
stops
to
display
the
location
and
type
of
each
error.
You
may
choose
to
attempt
to
recover
(re-write)
the
file
(press
YES)
or
simply
log
the
error
and
continue
(press
NO).
If
the
recovery
fails,
note
the
file
name
so
you
can
attempt
to
manually
read
the
file
later.
•
For
type
PROG
files,
manually
recover
by
LOADing
and
SAVEing
the
file.
Then
press
CTRL HALT
to
erase
any
unexpected
code.
Now GET
the
program
and
RE-STORE
it
on
another
media.
•
For
type
DATA
files,
attempt
to
GET
or
manually
read
the
data.
•
For
type
DSET
or
ROOT
files,
attempt
to
do
a
serial
unload
(DBUNLD)
and
recreate
the
file
as
described
in
the
System
Utilities
Manual.
All
other
file
types
are
not
recoverable
except
via
the
VERIFY
routine.
IMPORTANT
The
detection
of
any
errors
on
a
media
indicates
that
either
the
media
is
worn
or
defective
or
the
drive
requires
ser-
vice.
After
running
VERIFY
with
recov-
ery,
the
media
should
be
backed
up
onto
a
known
good
media.
Consult
your
prin-
cipal
operator
for
details.
If
Error
in
Main
Directory
appears
when
running
WITH RECOVERY,
press
EXIT
and
then
press
CHECK
AVT
to
rebuild
the
availability
table.
If
the
AVT
fails,
press
RECORD 0 RECOVERY
and
copy
the
spare
directory
to
the
main.
Then
run
CHECK
AVT
again.
Once
the
main
directory
and
availability
table
appear
OK,
run
VERIFY
again.
10-12
In
Case
of
Difficulty
An *
appears
in
place
of
the
sector
number
when
successive
sectors
of
a
track
cause
errors.
When
testing
a
flex
disc,
head
o
is
the
bottom
side
and
head
1
is
the
top
side.
When
WITH RECOVERY
is
selected,
the
test
stops
to
display
the
location
and
type
of
each
error.
You
may
choose
to
attempt
to
recover
(re-write)
the
file
(press
YES)
or
simply
log
the
error
and
continue
(press
NO).
If
the
recovery
fails,
note
the
file
name
so
you
can
attempt
to
manually
read
the
file
later.
•
For
type
PROG
files,
manually
recover
by
LOADing
and
SAVEing
the
file.
Then
press
CTRL HALT
to
erase
any
unexpected
code.
Now GET
the
program
and
RE-STORE
it
on
another
media.
•
For
type
DATA
files,
attempt
to
GET
or
manually
read
the
data.
•
For
type
DSET
or
ROOT
files,
attempt
to
do
a
serial
unload
(DBUNLD)
and
recreate
the
file
as
described
in
the
System
Utilities
Manual.
All
other
file
types
are
not
recoverable
except
via
the
VERIFY
routine.
IMPORTANT
The
detection
of
any
errors
on
a
media
indicates
that
either
the
media
is
worn
or
defective
or
the
drive
requires
ser-
vice.
After
running
VERIFY
with
recov-
ery,
the
media
should
be
backed
up
onto
a
known
good
media.
Consult
your
prin-
cipal
operator
for
details.
If
Error
in
Main
Directory
appears
when
running
WITH RECOVERY,
press
EXIT
and
then
press
CHECK
AVT
to
rebuild
the
availability
table.
If
the
AVT
fails,
press
RECORD 0 RECOVERY
and
copy
the
spare
directory
to
the
main.
Then
run
CHECK
AVT
again.
Once
the
main
directory
and
availability
table
appear
OK,
run
VERIFY
again.
10-12

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