HP EliteBook Folio 9470m Notebook PC (ENERGY STAR) User Manual download pdf (Page 5)

Starting with 2012 platforms, a preinstall image of UEFI Win8 is available. Several HP components now reside on the

ESP instead of the HP_TOOLS partition. The advantage of residing in ESP partition vs. HP_TOOLS is that components are

available when you are not using the HP preinstall image. However, the default size of the ESP is 100MB so HP’s overall

component size is limited.

Installation software for these EFI components should first enumerate all Fat32 partitions, and copy the firmware

packages to the ESP. The ESP can be located comparing the partition GUID to the ESP GUID definition, see the UEFI

Specification version 2.3.1 for details. If the installation software cannot find the ESP, This indicates that the ESP is a

legacy MBR system, not the GPT system.

How BIOS launches EFI applications

When an EFI application is launched, it has as much control of the system resources as the BIOS does. Because EFI

applications reside on the publicly accessible drive partition, they are not secure. BIOS launches only EFI applications

signed by HP.

NOTE: To reduce security vulnerability, execute only HP-signed EFI applications.

For HP-signed EFI applications

All HP EFI applications contain two files stored under the same subdirectory as the EFI application: filename.efi and

filename.sig.

Non–HP-signed EFI applications

Currently there are two methods that provide user level launch capability for the EFI Shell and other EFI Applications.

The first method is to boot to the EFI Shell or other EFI Applications by using the Boot from EFI File option. The second

method is to boot directly to the EFI Shell. Both options are currently listed under the Boot Option Menu listed under

Boot Manager (F9)

Boot from EFI File

The first method, Boot from EFI File is invoked by pressing the F9 Key to launch Boot Manager. All available boot

options are list under the Boot Option Menu. Selecting Boot from EFI File presents the File Explorer Screen which lists all

available file system mappings. Each entry allows traversing for that volume structure, once the desired EFI Application

is found, highlight the entry followed by pressing the enter key will launch the application. For security reasons, the

function can be disabled by the BIOS administrator.

Creating or restoring an HP_TOOLS partition on the hard drive

Use the following steps to create an HP_TOOLS partition and install related SofPaqs onto the partition:

 Use Partition Magic to create a partition on a local hard drive that has a System partition with the following

characteristics:

– Partition type: FAT32

– Partition size: 2 GB

– Volume name: HP_TOOLS

 In the new partition, create a folder called HEWLETT-PACKARD.

 Refer to Table 1 for preboot deliverables and directory paths.

Errors when launching the preboot applications

If the application launch keys fail to operate, the partition may have become corrupt. Reinstall the application using the

related SoftPaq from http://www.hp.com/support. If a reinstalled application does not function, contact technical

support.

The following errors may be displayed if a problem occurs when launching EFI applications:

 HP_TOOLS Partition not found: can’t find Fat 32 partition starting with “HP_TOOLS”

 Application not found: can’t find preboot application in directory

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HP EliteBook Folio 9470m Notebook PC (ENERGY STAR) User Manual Page 5

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