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Execute-disable bit capability, Security controller – Toshiba Satellite Pro A120 (PSAC0) User Manual

Page 127

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User’s Manual

7-11

HW Setup

Execute-Disable Bit Capability

This setting, which is displayed on the first page of the setup screen,

configures the Execute-Disable Bit function of the CPU. This function is
specific to Intel

®

processors and, when activated, helps to reduce security

threats to the computer by preventing certain classes of malicious “buffer

overflow” attacks when combined with a supporting operating system such

as Windows XP.

Security controller

The security controller settings are available in SYSTEM SETUP (2/2).

TPM

This setting enables or disables the security controller known as TPM

(Trusted Platform Module).

Clear TPM Owner

This setting is used to erase the data in TPM when disposing of the

computer or when the owner of the computer changes, etc. Once this

operation is carried out, the TPM configuration settings are erased, such

that the encrypted data can no longer be decrypted and the files can no

longer be read. Please backup or delete the data as necessary before

carrying out this operation.
The operating procedure is as follows:
1. Move the cursor to the Clear TPM Owner setting and press the Space

key or BkSp key.

2. A message is displayed. Press the Y, E, S, and Enter keys and the

TPM information is erased.

Available

Makes the processor’s Execute-Disable Bit

Capability available for use.

Not Available

Disables the processor’s Execute-Disable Bit

Capability so that it is not available for use.

(Default).

System configuration changes, other than changes to this setting, should

be made within Windows by using applications such as TOSHIBA HW

Setup, TOSHIBA Password Utility, TOSHIBA Power Saver, Windows

Device Manager and so forth.

This option is available only on models with built in TPM module

Enabled

Enables the TPM.

Disabled

Disables the TPM (Default).

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