HP EliteBook Folio 9470m Notebook PC (ENERGY STAR) User Manual download pdf (Page 12)

POST

POST includes these tools and information:

 Drivers and firmware versions of installed software

 Information about disk drives directly attached to the chipset (not to a Smart Array Controller)

POST logo requirements

 POST in native resolution

 Design your logo :

– Centered horizontally

– 38.2% from the top of the screen

 The logo’s size should be:

– <= 40% of the screen height

– <= 40% of the screen width

 Position your logo on-screen at POST

 Add your logo to the BGRT

POST time

Remove USB Initialization on default boot. Fast boot initializes the internal HDD only to achieve the required boot time.

Win8 Hybrid Boot and flash

By default, Hybrid Boot is enabled for Win8 shutdown. It is the hibernation without user data. Thus at the next boot, the

OS does a resume from S4 instead of the cold boot. However, when BIOS changes certain system configurations, either

via flash or some setting change during POST, a full restart is required for the OS to pick up the changes. In such cases,

the BIOS must inform the OS to do a full boot using the ACPI specification.

The Firmware ACPI Control Structure (FACS) table (from the ACPI specification), contains a four-byte field at

offset 8 called “Hardware Signature” with the following description:

The value of the system’s “hardware signature” at last boot is calculated by the BIOS on a best effort basis to indicate

the base hardware configuration of the system such that different base hardware configurations can have different

hardware signature values. OS-directed Power Management (OSPM) uses this information in waking from an S4 state, by

comparing the current hardware signature to the signature values saved in the nonvolatile sleep image. If the values are

not the same, OSPM assumes that the saved non-volatile image is from a different hardware configuration and cannot

be restored.”

BitLocker

Systems which support TPM and wired LAN networking must support the EFI_DHCP4_protocol, the

EFI_DHCP4_SERVICE_BINDING_PROTOCOL, the EFI_DHCP6_protocol, and the EFI_DHCP6_SERVICE_BINDING_PROTOCOL

for wired LAN as defined in UEFI 2.3.1.

At preboot, BitLocker must be able to discover its Network Unlock provider on a Windows Deployment Server (WDS) via

DHCP, and unlock the OS volume after retrieving information from WDS.

Boot Order

In UEFI design, the BootOrder variable contains an array of UINT16’s that make up an ordered list of the Bootnumbers

options. The first element in the array is the value for the first logical boot option, the second element is the value for

the second logical boot option, etc. The BootOrder list is used by the firmware’s boot manager as the default boot order.

The OS, as well as BIOS, can add/remove Boot numbers.

This is different than the boot options provided in the legacy F10 boot order menu. HP suggests that the user create two

separate Boot Orders in the BIOS:

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 20 21

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HP EliteBook Folio 9470m Notebook PC (ENERGY STAR) User Manual Page 12