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Your
chances of
using Unerase
File
for a successful
recovery
of
a deleted or
open file
are best
if
the diskette containing the file
has not been written to at all since the
file
was deleted or
opened
for output. Otherwise
,
part
or
all of the file may have been over-
written by new data.
After
selecting
Unerase File by typing
2,
insert
the disk
contain-
ing the
file
you wish to
recover
in
the
cu
rrent
drive and press
[surt ].
The
utility displays a
list
of
the first
32 filenames on the
disk
,
each marked with a number
from
0 to 31
.
Each
entry
has
a
"
file
type"
code
before it.
A
blank space means the file
is
in
use
and
is
good. A
" W"
means
that
the file
is
in use but was left open
for
outp
ut
.
A
" D"
means that
the
file has been deleted.
Blank
directory entries appear as
"(unused)."
Press
[Ratlrn
]
for a
list
of
the
remaining files on the diskette
-
up
to
32 more will be dis-
played
,
numbered
32 to
63.
Enter the number
of
any filename preceded by a
W
or
D
file type
code
.
If
you
press
[RetIrn
]
or enter a number higher than
63
,
the
message
You didn 't
choose
anything!
appears.
If
you
select an
unused
entry,
the message
Thai file is unused
.
appears
.
If the file you
specify
has not been erased
,
a message to
that
effect appears and you must press
[surt
]
to resume. Otherwise
,
you
are shown a
numeric
entry type code for the
file,
the fi-
lename
,
the file length
,
and the starting sector
in
both hexadeci-
mal and decimal
notation.
Type code
80 indicates a deleted
file
,
and
43
means
open for output
.
The
utility also
prompts
you
to
confirm your choice by pressing
Y.
Type
Y
to recover the speci-
fied file.
Before
actually recovering ("unerasing
"
)
a file, the
program
first
verifies all files on
the diskette
(see
the next subsection
for
de-
tails on this process).
Unless
problems are encountered
,
the
recovered
file
will also be verified
and the
directory sector con-
taining
its
entry will be written back to the diskette with a valid file
type code.
After
the last file
has been verified, the Volume
Table
Of Contents
(VTOC)
is
written to the diskette and the utility prompts YOU'to
press
(
Start
]
to return
to the
DISKFIX
.COM
menu
.
133
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