Flash
update
procedures
This
section
details
how
to
flash
(update)
the
BIOS.
Updating
(flashing)
BIOS
from
a
diskette
1.
Insert
a
system
program
update
(flash)
diskette
into
the
diskette
drive.
system
program
updates
are
available
at
http://www.lenovo.com/support
on
the
World
Wide
Web.
2.
Turn
on
the
computer.
If
it
is
already
on,
you
must
turn
it
off
and
back
on.
The
update
begins.
3.
Follow
the
instructions
on
the
screen
to
complete
the
update.
Recovering
from
a
POST/BIOS
update
failure
Attention:
If
an
interruption
occurs
during
a
POST/BIOS
update
(flash
update),
the
computer
might
not
restart
correctly.
If
this
occurs,
perform
the
following
procedure
(also
known
as
a
Boot-block
recovery).
Note:
If
your
computer
has
no
internal
diskette
drive,
an
optional
USB
diskette
drive
must
be
connected
to
use
the
BIOS
flash
diskette.
1.
Turn
the
computer
off
and
insert
the
special
recovery
BIOS
flash
diskette
in
the
diskette
drive.
2.
Turn
the
computer
on
and
immediately
during
startup,
press
the
Ctrl
and
Home
keys
(Ctrl
+
Home)
at
the
same
time.
3.
The
computer
will
automatically
begin
recovering
the
BIOS.
During
this
time
you
will
see
a
screen
indicating
that
Flash
recovery
has
started.
After
the
update
session
completes,
the
computer
automatically
reboots.
4.
Remove
the
BIOS
flash
diskette
from
the
diskette
drive.
396
Hardware
Maintenance
Manual
Содержание ThinkCentre A61
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