HP EliteBook 630 Maintenance and Service Guide - Page 94
Statement of memory volatility, Table 11-1
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Table 11-1 Troubleshooting steps for nonvolatile memory usage (continued) Nonvolatile memory type Amount (Size) Does this memory store customer data? Does this memory retain data when power is removed? What is the purpose of this memory? How is data entered into this memory? How is this memory write-protected? write-protection method varies by memory vendor. System BIOS 9 MB Yes Yes Stores system System BIOS code is NOTE: Writing data BIOS code and programmed at the to this ROM in an computer factory. Code is updated inappropriate manner configuration when the system BIOS can render the data. is updated. Configuration computer data and settings are nonfunctional. entered using the Computer Setup (BIOS) or A utility must be a custom utility. used for writing data to this memory and is available on the HP website; go to http://www.hp.com/ support. Select Find your product, and then follow the on-screen instructions. Intel 1.5 MB or 7 Yes Yes Stores Management Engine Code The Intel chipset is Management MB Management is programmed at the configured to enforce Engine Firmware Engine Code, factory. Code is updated hardware protection to (present only in Settings, via Intel secure firmware block all direct read select Elite or Z Provisioning update utility. Unique write access to this models. For Data and iAMT Provisioning Data can be area. An Intel utility more third-party entered at the factory must be used for information, go data store. or by an administrator updating the firmware. to using the Management Only firmware updates http://www.hp.com/support. Select Engine (MEBx) setup digitally signed by Intel Identify your utility. The third-party can be applied using product for data store contents can this utility. manuals and be populated by a remote specific product management console or information, and local applications that then follow the have been registered by on-screen an administrator to have instructions.) access to the space. Bluetooth flash 2 megabits No Yes Stores Bluetooth flash is A utility must be used (select products Bluetooth programmed at the for writing data to this only) configuration factory. Tools for writing memory and is made and firmware. data to this memory are available through not publicly available but newer versions of can be obtained from the the driver whenever silicon vendor. the flash requires an upgrade. 802.11 WLAN 4 kilobits to 8 No Yes Stores 802.11 WLAN EEPROM A utility must be used EEPROM kilobits configuration is programmed at the for writing data to and factory. Tools for writing this memory and is calibration data to this memory are typically not made data. not made public. available to the public unless a firmware upgrade is necessary to address a unique issue. 86 Chapter 11 Statement of memory volatility