Lenovo THINKPAD Z60M User Manual
Page 17
or
OEM
install).
The
exceptions
to
this
are
if
the
Predesktop
Area
is
already
installed
and
does
not
need
to
be
upgraded
or
if
the
property
PDA=0
is
set
on
the
command
line
when
executing
the
installation
and
the
Predesktop
Area
(any
version)
does
not
already
exist.
The
installation
executable
contains
a
file
pdaversion.txt
that
contains
the
minimum
version
of
the
Predesktop
Area
that
can
work
with
that
version
of
Windows.
The
installation
executable
installer
will
look
for
a
Predesktop
Area
file
using
the
following
logic:
v
Old
Predesktop
Area
(Rescue
and
Recovery
1.0
or
2.X)
exists
or
no
Predesktop
Area
exists:
The
installer
will
look
for
a
.tvt
file
with
a
compatibility
code
(for
example:
AA,
AB)
that
is
equal
to
the
minimum
version
compatibility
code
and
a
level
that
is
greater
than
or
equal
to
the
minimum
version
(all
other
version
fields
in
the
.tvt
filename
must
match
the
minimum
version
exactly).
If
a
file
is
not
found
meeting
these
criteria,
the
installation
is
halted.
v
New
(Rescue
and
Recovery
3.0
or
greater)
Predesktop
Area
exists:
The
installer
will
compare
the
current
Predesktop
Area’s
compatibility
code
against
the
minimum
version
compatibility
code
and
take
the
following
actions
based
on
the
results:
–
Current
code
>
Minimum
code:
The
installer
presents
a
message
that
the
current
environment
is
not
compatible
with
this
version
of
Rescue
and
Recovery.
–
Current
code
=
Minimum
code:
The
installer
compares
the
current
version
level
against
the
minimum
version
level.
If
the
current
level
is
greater
than
or
equal
to
the
minimum
level,
the
installer
looks
for
a
.tvt
file
with
a
compatibility
code
(for
example:
AA,
AB)
that
is
equal
to
the
minimum
version
compatibility
code
and
a
level
that
is
greater
than
the
current
version
level
(all
other
version
fields
in
the
.tvt
filename
must
match
the
minimum
version
exactly).
If
it
does
not
find
a
file,
the
install
process
continues
without
updating
the
Predesktop
Area.
If
the
current
level
is
less
than
the
minimum
level,
the
installer
will
look
for
a
.tvt
file
with
a
compatibility
code
(AA
or
AB).
that
is
equal
to
the
minimum
version
compatibility
code
and
a
level
that
is
greater
than
or
equal
to
the
minimum
version
level
(all
other
version
fields
in
the
.tvt
filename
must
match
the
minimum
version
exactly).
If
a
file
is
not
found
meeting
these
criteria,
the
installation
is
halted.
–
Current
code
<
Minimum
code:
The
installer
will
look
for
a
.tvt
file
with
a
compatibility
code
(for
example:
AA,
AB)
that
is
equal
to
the
minimum
version
compatibility
code
and
a
level
that
is
greater
than
or
equal
to
the
minimum
version
(all
other
version
fields
in
the
.tvt
filename
must
match
the
minimum
version
exactly).
If
a
file
is
not
found
meeting
these
criteria,
the
installation
is
halted.
v
Predesktop
Area
language
packs
(approximately
5
–
30
MB
each):
There
are
16
language
packs
for
Windows
PE
that
are
supported
in
Rescue
and
Recovery
4.1.
Each
language
pack
is
named
in
the
format
Z501ZABXXXXCC00.tvt
where
XXXX
is
the
build
ID
and
CC
represents
the
language.
One
of
these
files
is
required
if
the
Predesktop
Area
is
being
installed
on
a
non-English
system
or
a
system
with
a
non-supported
language
and
must
be
in
the
same
directory
as
the
main
installation
and
the
US
Predesktop
Area
.tvt
file.
If
the
Predesktop
Area
is
being
installed
or
updated
and
a
language
pack
is
required,
the
installation
looks
for
the
minimum
level
of
language
pack
required
in
a
version
file
contained
within
Chapter
2.
Installation
11