Radio Shack TRS-80 Hardware Manual page 37

To
repair the record,
determine
the
original contents
of
the defec-
tive
source
file
.record,
limn
write
this
information
to
the proper
record
on
the
destination disk.
After
the record
is
repaired, write zeroes over the bad
record
indication
in
the
header
(Bytes 129-256). Follow
this
procedure
again
lor
each bad
record.
if
you do
not corrccl
ail
Iho records, the
remaining
2-byte record
numbers
should be
moved
to
the from
of
the
field,
starting
ai
Byte
129.
31