HP Compaq dc5700 Series Utility Manual page 11

Table 3 Computer Setup—Storage (continued)
Storage Options
ENWW
CAUTION Ordinarily, the translation mode selected automatically by the BIOS should not
be changed. If the selected translation mode is not compatible with the translation mode
that was active when the disk was partitioned and formatted, the data on the disk will be
inaccessible.
Translation Parameters (ATA disks only)
NOTE This feature appears only when User translation mode is selected.
Allows you to specify the parameters (logical cylinders, heads, and sectors per track) used by the
BIOS to translate disk I/O requests (from the operating system or an application) into terms the hard
drive can accept. Logical cylinders may not exceed 1024. The number of heads may not exceed
256. The number of sectors per track may not exceed 63. These fields are only visible and
changeable when the drive translation mode is set to User.
Default Values IDE/SATA
Allows you to specify the default values for the Multisector Transfers, Transfer Mode, and Translation
Mode for ATA devices.
Removable Media Boot
Enables/disables ability to boot the system from removable media.
Legacy Diskette Write
Enables/disables ability to write data to legacy diskettes.
BIOS DMA Data Transfers
Allows you to control how BIOS disk I/O requests are serviced. When Enable is selected, the BIOS
will service ATA disk read and write requests with DMA data transfers. When Disable is selected,
the BIOS will service ATA disk read and write requests with PIO data transfers.
SATA Emulation
Allows you to choose how the SATA controller and devices are accessed by the operating system.
There are up to two supported options: IDE and AHCI.
IDE is the default option. Use this option for "normal" (non-AHCI) configurations.
Select the AHCI option to enable DOS and boot accesses to SATA devices using the AHCI interface.
Select this mode, if the target operating system supports accessing the SATA devices via AHCI (e.g.,
Windows Vista) and AHCI accesses are desired.
NOTE Windows 2000 and Windows XP require a third-party device driver to access SATA
devices using the AHCI interface. If you attempt to boot either of these operating systems
in AHCI mode without the required device driver, the system will crash (blue screen).
SATA 0 and 2
Allows you to enable or disable DOS and boot accesses to the Primary channel of the first SATA
controller. This feature only applies when SATA Emulation = IDE.
NOTE Advanced operating systems like Windows may reenable the channel.
SATA 1 and 3
Allows you to enable or disable DOS and boot accesses to the Secondary channel of the first SATA
controller. This feature only applies when SATA Emulation = IDE.
Computer Setup (F10) Utilities 5