Dell OptiPlex Gn+, Справочное и монтажное руководство

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2-6 Dell OptiPlex Gn and Gn+ Low-Profile Systems Reference and Installation Guide
For example, you may have a memory expansion card
that needs to be addressed starting at 15 MB. Selecting
the 15M - 16M
option in the Reserved Memory category
specifies that only part of the base memory comes from
the dual in-line memory modules (DIMMs) on the
system board, whereas the base memory from 15 to
16 MB comes from the memory expansion card.
The Reserved Memory category has the following
options:
•
None (the default)
•
15M - 16M
CPU Speed
CPU Speed indicates the processor speed at which your
system boots.
Press the left- or right-arrow key to toggle the CPU
Speed
category between the resident microprocessor’s
rated speed (the default) and a lower compatibility speed,
which lets you accommodate speed-sensitive application
programs. A change to this category takes effect
immediately (rebooting the system is not required).
You can also toggle between the rated processor speed
and the compatibility speed while the system is running
in real mode by pressing <Ctrl><Alt><\>. (For
keyboards that do not use American English, press
<Ctrl><Alt><#>.)
Num Lock
Num Lock determines whether your system boots with
the Num Lock mode activated on 101- or 102-key
keyboards (it does not apply to 84-key keyboards).
When Num Lock mode is activated, the rightmost bank
of keys on your keyboard provides the mathematical and
numeric functions shown at the tops of the keys. When
Num Lock mode is turned off, these keys provide cursor-
control functions according to the label on the bottom of
each key.
Keyboard Errors
Keyboard Errors enables or disables reporting of
keyboard errors during the power-on self-test (POST),
which is a series of tests that the system performs on the
hardware each time you turn on the system or press the
reset button.
This category is useful when applied to self-starting
servers or host systems that have no permanently
attached keyboard. In these situations, selecting
Do Not
Report suppresses all error messages relating to the
keyboard or to the keyboard controller during POST.
This option does not affect the operation of the
keyboard itself, if a keyboard is attached to the
computer.
System Password
System Password displays the current status of your
system’s password security feature and allows you to
assign and verify a new password. No one can assign a
new password unless the current status is Not Enabled,
which is displayed in bright characters.
The options for the System Password category are:
•
Not Enabled (the default)
•
Enabled
•
Disabled by Jumper
NOTE: Read “Using the System Password Feature”
found later in this chapter for instructions on assigning a
system password and using or changing an existing
system password. See “Disabling a Forgotten Password”
found later in this chapter for instructions on disabling a
forgotten system password.
Password Status
When Setup Password is set to Enabled, Password Status
allows you to prevent the system password from being
changed or disabled at system start-up.
To lock the system password, you must first assign a
setup password and then change the Password Status
category to Locked. In this state, the system password
cannot be changed through the System
Password
category and cannot be disabled at system start-up by
pressing <Ctrl><Enter>.
To unlock the system password, you must enter the setup
password and then change the Password Status category
to Unlocked. In this state, the system password can be
disabled at system start-up by pressing <Ctrl><Enter>
and then changed through the System Password category.