Reference Guide

Table 5. Legacy Option ROM with Secure Boot

secureboot — enable secureboot — disable

When legacyorom is enabled, NOT Allowed Allowed

--lidswitch

Valid Argument enable, disable

Description Enables or disables the lid switch functions.

• enable — OS setting determines the display behavior when lid is closed.

• disable — Display will not be affected when lid is closed.

--limitcpuidvalue

Valid Argument on, off

Description Limits the maximum value the processor standard CPUID function supports. Some operating

system will be unable to install if the maximum CPUID function supported is greater than 3. If set

to on, the CPUID function is limited to 3. If set to off, the CPUID function is not limited to 3.

--liquidcooler1

Valid Argument

enable, disable

Description

Enables or disables the liquid cooler 1.

• enable — Enables the liquid cooler 1.

• disable — Disables the liquid cooler 1.

--liquidcooler2

Valid Argument

enable, disable

Description

Enables or disables the liquid cooler 2.

• enable — Enables the liquid cooler 2.

• disable — Disables the liquid cooler 2.

--logicproc

Valid Argument

enable, disable

Description Enables or disables hyper threading on the next system boot. On some Dell platforms, that

support multi-core processor technology, this is enabled or disabled though the platform does not

support hyper threading. In this case, this command may enable or disable multi-core processor

technology.

--lpt

Valid Argument

lpt1, lpt2, lpt3

Description Defines the parallel port configuration. lpt1 enables the built-in parallel port of the system to

operate in LPT1 mode, using Input/Output (I/O) address 378. lpt2 enables the system’s built-in