Lenovo 81713GU User Manual - Page 42

Selecting, startup, device, temporary, Changing, sequence, Advanced, settings

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Selecting a startup device If your computer does not start up (boot) from a device such as the CD-ROM, diskette, or hard disk as expected, use one of the following procedures to select a startup device. Selecting a temporary startup device Use this procedure to startup from any boot device. Note: Not all CDs, hard disks, and diskettes are startable (bootable). 1. Turn off your computer. 2. Turn on your computer and look for the following prompt on the logo screen: (To interrupt normal startup, press Enter) Press Enter when you see the prompt. 3. When the Startup Interrupt Menu displays, press F12. 4. Select the desired startup device from the Startup Device menu and press Enter to begin. Note: Selecting a startup device from the Startup Device menu does not permanently change the startup sequence. Changing the startup device sequence To view or permanently change the configured startup device sequence, do the following: 1. Start the IBM Setup Utility program (see "Starting the IBM Setup Utility program" on page 25). 2. Select Startup. 3. Select Startup Sequence. See the information displayed on the right side of the screen. 4. Select the devices for the Primary Startup Sequence, the Automatic Startup Sequence, and the Error Startup Sequence. 5. Select Exit from the IBM Setup Utility menu and then Save Settings or Save and exit the Setup Utility. If you have changed these settings and want to return to the default settings, select Load Default Settings on the Exit menu. Advanced settings On some computer models the Advanced settings menu includes a setting to Enable/Disable HyperThreading. This feature works only with HyperThreading-aware operating systems such as Microsoft Windows XP. The default setting for HyperThreading is Enabled. However, if you select Set Defaults and are using an operating system other than Windows XP, your computer performance might be degraded. Therefore, you should always set HyperThreading to Disabled unless you are sure your operating system supports HyperThreading. 28 User Guide

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Selecting
a
startup
device
If
your
computer
does
not
start
up
(boot)
from
a
device
such
as
the
CD-ROM,
diskette,
or
hard
disk
as
expected,
use
one
of
the
following
procedures
to
select
a
startup
device.
Selecting
a
temporary
startup
device
Use
this
procedure
to
startup
from
any
boot
device.
Note:
Not
all
CDs,
hard
disks,
and
diskettes
are
startable
(bootable).
1.
Turn
off
your
computer.
2.
Turn
on
your
computer
and
look
for
the
following
prompt
on
the
logo
screen:
(To
interrupt
normal
startup,
press
Enter)
Press
Enter
when
you
see
the
prompt.
3.
When
the
Startup
Interrupt
Menu
displays,
press
F12.
4.
Select
the
desired
startup
device
from
the
Startup
Device
menu
and
press
Enter
to
begin.
Note:
Selecting
a
startup
device
from
the
Startup
Device
menu
does
not
permanently
change
the
startup
sequence.
Changing
the
startup
device
sequence
To
view
or
permanently
change
the
configured
startup
device
sequence,
do
the
following:
1.
Start
the
IBM
Setup
Utility
program
(see
“Starting
the
IBM
Setup
Utility
program”
on
page
25).
2.
Select
Startup
.
3.
Select
Startup
Sequence
.
See
the
information
displayed
on
the
right
side
of
the
screen.
4.
Select
the
devices
for
the
Primary
Startup
Sequence,
the
Automatic
Startup
Sequence,
and
the
Error
Startup
Sequence.
5.
Select
Exit
from
the
IBM
Setup
Utility
menu
and
then
Save
Settings
or
Save
and
exit
the
Setup
Utility
.
If
you
have
changed
these
settings
and
want
to
return
to
the
default
settings,
select
Load
Default
Settings
on
the
Exit
menu.
Advanced
settings
On
some
computer
models
the
Advanced
settings
menu
includes
a
setting
to
Enable/Disable
HyperThreading.
This
feature
works
only
with
HyperThreading-aware
operating
systems
such
as
Microsoft
Windows
XP.
The
default
setting
for
HyperThreading
is
Enabled.
However,
if
you
select
Set
Defaults
and
are
using
an
operating
system
other
than
Windows
XP,
your
computer
performance
might
be
degraded.
Therefore,
you
should
always
set
HyperThreading
to
Disabled
unless
you
are
sure
your
operating
system
supports
HyperThreading.
28
User
Guide