Radio Shack TRS-80 model III Owner's Manual page 76

TRSDOS
Password
Protection
convert
is
designed
to
preserve the
password
security
of each
file
that
it
transfers.
To accomplish
this
and
still
allow
the
copying of protected
files,
convert
follows different
procedures depending on
the access
and update
passwords on each
file.
In the
simplest case, a
file
has blank access
and update passwords.
The
copied
file
will
be given blank passwords.
(If
you
have
a
Model
I
Disk System with
trsdos
2.3,
you
may
use
the
prot
command
to
remove
all
passwords from
all
files.
This
will
simplify the
convert
process.
Do
this
on
the
Model
I
system
before
you
attempt
to
convert
to
Model
III.)
In
another
case, the
access
and passwords
are different. If
the access
password
is
blank
and
the
update
is
not,
then
trsdos
will
prompt you
for the
update
password.
If
you
know
the
update password,
type
it
in.
The
file
will
be copied
with access
and update passwords
set
to the old
update password.
If
you
don't
know
the
update password, simply press (ENTER)
.
The
file
will
be copied with
the
access
password
set to
blanks
and
the
update
password
set to
an
unknown
value.
If
the
access
and update
passwords
are not
blank and
they
are
not the
same,
trsdos
will
not
copy
the
file
,
but
will print
the
message
,
FILE SKIPPED,
and
continue with
the
next
file
in
the
source
directory.
Sample Use
Get
the
Model
I
diskette ready.
If
you have
a
Model
I
Disk System with
trsdos
2.3, try to
remove
all
passwords from
all
your
files.
This
will
prevent
any
problems with passwords.
The password
protection
may
be
restored
with the
Model
III
attrib or
prot
commands
after
the
conversion
is
complete.
Using
the
Model
III
Disk System, you must always have
a
Model
III
tr sdos
diskette in
Drive
0.
trsdos
ready
should be displayed. Type:
CONVERT
(ENTER)
.
The program
will ask,
SOURCE
DR
I
YE?. Type
in
the
number
of the drive
containing the
Model
I
diskette,
and press
(ENTER)
.
Then
the
program
will
ask,
DESTINATION DRIVE?. Type
in the drive
number and
press
(ENTER)-
In
two-
drive systems,
you must
use Drive as the destination.
During
the
conversion process, the
name
of each
file
will
be displayed as
it
is
copied.
If
password information
is
needed,
trsdos
will
prompt you
for
it.
If
you
know
the
update password, type
it
in
and press
(ENTER)
.
The
file
will
be
copied
and given
the
same update password.
If
you do
not
know
the
update
password, simply press
(ENTER)
,
in
which
case
the
file
will
be copied and given
an
unknown
update password.
If
a
file
name
on
the
source diskette
is
already
used on
the destination diskette,
trsdos
will print this
message:
FILE EXISTS* USE
IT?.
If
you
type
Y,
trsdos
will
copy
the
file.
The previous contents of
the
Model
III file
will
be
lost. If
you
type
N,
trsdos
will
skip the
file,
and
get the
next
one from
the
Model
I
diskette.
69