AHCI Configuration allows you to enable the enhanced AHCI functionWindows XP Service Pack 1 + IAA driver supports AHCI mode). This item onlyappears if the previous item SATA – Device 31, Function 2 is set atEnhanced.The options areEnabled andDisabled.Boot-time Diagnostic Screen sets if the system diagnostic screen would bedisplayed during system boot-up. The options areEnabled andDisabled.Security MenuThe Security menu contains the TPM (Trusted Platform Module) setting. TPMis a component on your computer’s motherboard that is specifically designedto enhance platform security above-and-beyond the capabilities of today’ssoftware by providing a protected space for key operations and othersecurity critical tasks. Using both hardware and software, the TPM protectsencryption and signature keys at their most vulnerable stages – operationswhen the keys are being used unencrypted in plain-text form. The TPM isspecifically designed to shield unencrypted keys and platform authenticationinformation from software-based attacks. TPM acts as a portal to an unlimited amount of protected data.– Supports encrypted file systems, etc.– What types of data are protected? Small data (< 2048 bits)– Symmetric encryption/decryption keys– Signing keys– How is data protected? Encrypted by asymmetric RSA keys– TPM checks integrity of decrypted data– Decrypted data may only be released when TPM is in an approvedstate Object Types:– Storage Root Key (SRK) protects all TPM protected objects– Storage keys protect (decrypt) child nodes– Signature keys are always at the leaf of the tree– Data blobs are always at the leaf of the tree Object Access:– Access time depends on position in the tree– Object caching is supported during a boot cycle
