HP Pro 6300 GPT Hard Disk Drives for HP Business Desktops
HP Pro 6300 Manual
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- HP Pro 6300 | GPT Hard Disk Drives for HP Business Desktops - Page 1
HP Desktops April 2011 Table of Contents: Abstract ...1 Why GPT?...1 GPT vs MBR ...2 Bootable vs Data Drives and UEFI BIOS 4 OS Support ...6 Storage Driver Support 6 Imaging Tool Support decades used the Master Boot Record (MBR) partition method. A new method called GUID Partition Table (GPT)) - HP Pro 6300 | GPT Hard Disk Drives for HP Business Desktops - Page 2
BIOS and UEFI-aware OS. GPT vs MBR There are a number of differences between MBR and GPT. Some of the key differences include the following: • MBR only supports 4 primary partition table entries while GPT supports for the header and one for the partition table. Figure 1 on the following page - HP Pro 6300 | GPT Hard Disk Drives for HP Business Desktops - Page 3
Secondary GPT Secondary/backup GPT header and partition entries LBA -34 LBA -33 LBA -2 LBA -1 NOTE: LBA -34 refers to the 34th addressable block address counted backwards from the last LBA on the drive. Entries 1 thru 4 Entries 5 - 128 Secondary GPT Header LBA = 512 bytes Figure 1. GPT - HP Pro 6300 | GPT Hard Disk Drives for HP Business Desktops - Page 4
the boot information on a GPT drive. In addition, the system must also have a "UEFI aware" OS such as Microsoft Windows 7 ™64-bit. For selected desktops, HP implements the Type 0 BIOS Information data structure (as described in version 2.7 of the SMBIOS specification) to indicate UEFI BIOS support - HP Pro 6300 | GPT Hard Disk Drives for HP Business Desktops - Page 5
Characteristics Extension Byte 2 Bit Position Description 0 When set, BIOS boot specification is supported 1 When set, function key-initiated Network Service boot is supported. When function key-initiated Network Service boot is not supported, a network option ROM may choose to offer this - HP Pro 6300 | GPT Hard Disk Drives for HP Business Desktops - Page 6
have separate OS plans). Table 2 summarizes current OS support for HP Desktops. Table 2. Summary of OS support for GPT drives by HP Desktops Operating system GPT Boot Support? GPT Data Storage Support? Windows 7™ SP1 64-bit Yes (requires UEFI BIOS) Yes Windows 7™ SP1 32-bit No Yes Windows - HP Pro 6300 | GPT Hard Disk Drives for HP Business Desktops - Page 7
to access the boot menu using F9, then select "Legacy Boot Sources/ATAPI DVD Drive/SATA0" as shown in Figure 5. Figure 5. BIOs menu of HP UEFI BIOS system Drive a problem. Other drive encryption tools, such as McAfee Endpoint™ software encryption tools, may or may not have specific GPT support at - HP Pro 6300 | GPT Hard Disk Drives for HP Business Desktops - Page 8
UEFI-based system. With GPT, partition and formatting support of ever-increasing drive sizes is assured for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP
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GPT hard Disk Drives
For HP Desktops
April 2011
Table of Contents:
Abstract
..............................................................................................................
1
Why GPT?
...........................................................................................................
1
GPT vs MBR
........................................................................................................
2
Bootable vs Data Drives and UEFI BIOS
................................................................
4
OS Support
.........................................................................................................
6
Storage Driver Support
........................................................................................
6
Imaging Tool Support for GPT
..............................................................................
7
Drive Encryption
..................................................................................................
7
Summary
............................................................................................................
8
For more information
..........................................................................................
8
Abstract
In order to be used in a computer system, a hard disk drive (HDD) must first be
partitioned. Partitioning is done at the drive level and for many decades used the
Master Boot Record (MBR) partition method. A new method called GUID Partition
Table (GPT)) is now used for large-capacity drives. GPT allows for volume sizes
much greater than 2.19TB, and therefore must be used on drives larger than the
MBR limit of 2.19TB. This white paper describes the rationale for GPT and the types
of OS, BIOS, driver, and SW tool support needed to successfully implement GPT
drives in desktop systems.
Why GPT?
HDD areal density (bits/sq in) and tracks per inch (TPI) continue to steadily
increase. For 2010, many typical desktop 3.5” hard drives have areal densities
and TPI that permit capacities up to 500GB per platter. In 2011, it is expected that
improvements in areal density and TPI will allow drive manufacturers to begin
shipping drives that have capacities of1TB/platter. At this density, drives of 2TB
and 3TB capacities become more easily producible and hence cheaper and more
widely available.