EFI Preboot Guidelines and Windows 8 UEFI Secure Boot for HP Business Notebooks and Desktops PPS Business Notebook and Desktop - Technical White Paper

Technical white paper | UEFI Secure Boot on HP business notebooks, desktops, and workstations
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Directories and descriptions
The HP_TOOLS UEFI partition file and folder structure are similar to the Windows file and folder structure. During the
installation of an UEFI application, the HP UEFI Application SoftPaqs unbundle into the C:\swsetup directory. The UEFI
software installation then searches for the FAT32 partition labeled HP_TOOLS and installs itself into the following directory:
:\Hewlett-Packard\<softwarename>
Disk Layouts
The disk layouts vary between notebooks, desktops, and workstations as shown in the following figures:
Figure 1. Disk layouts for notebooks .
GPT-based layout
UEFI System
partition (ESP):
File system: Fat32
OS Partition:
File system: NTFS
Data Partition 1 – n
(Where applicable):
File system: NTFS
HP_TOOLS partition:
File system: Fat32
Recovery partition:
File system: NTFS
MBR-based layout
System partition
(Where applicable):
File system: NTFS
OS Partition:
File system: NTFS
Data partition 1 – n
(Where applicable):
File system: NTFS
HP_TOOLS partition:
File system: Fat32
Recovery partition:
File system: NTFS
Figure 2. Disk layouts for desktops.
GPT-based layout
UEFI System
partition (ESP):
File system: Fat32
WinRE
Partition
OS
Partition:
File system:
NTFS
Data partition 1 – n
(Where applicable):
File system: NTFS
Recovery partition:
File system: NTFS
HP_Tools partition:
File system: Fat32
MBR-based layout
UEFI System
partition (ESP):
File system: NTFS
WinRE
Partition:
OS
Partition:
File system:
NTFS
Data partition 1 – n
(Where applicable):
File system: NTFS
Recovery partition:
File system: NTFS
HP_Tools partition:
File system: Fat32
Figure 3. Disk layouts for workstations.
GPT-based layout (requires UEFI/GPT boot, no data partitions on C: drive)
WinRE partition (C:)
File system: Fat32, (1023MB)
ESP (C:)
360MB
OS partition(C:)
File system: Fat32
(remainder of drive)
Recovery partition (D:)
File system: NTFS
(about 8GB)
HP_TOOLS Partition directories and descriptions
The HP_TOOLS partition structure should mirror what we already have for NTFS file system. And the UEFI application and
pre-boot application installation should follow the rules for other HP software.
Web-released pre-boot deliverables require current softpaqs. When a softpaq is run, it will extract into the “C:\swsetup
directory”, the same as other softpaqs. Then the pre-boot software installation should search for the Fat 32 partition with
the “HP_TOOLS” label and install itself under the directory “:\HEWLETT-PACKARD\softwarename.”
For example, you place the HP System Diagnostic and its digital signature under “:\HEWLETT-
PACKARD\SYSTEMDIAGS\SystemDiags.UEFI” and “SystemDiags.Sig.”