HP Compaq dx 7200 and dc7600 Personal Computers, Technical Reference Guide, 1st Edition

Technical Reference Guide www.hp.com 8-9
BIOS ROM
Storage
(continued)
Transfer Mode
Specifies mode used for data transfer.. Options (subject to device
capabilities) are Max UDMA (default), PIO 0, Max PIO, Enhanced
DMA, and Ultra DMA 0.
Translation Parameters (ATA disks only)
✎
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.
Storage Options 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.
✎
After saving changes to Removable Media Write, the computer
will restart. Turn the computer off, then on, manually.
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.
“Separate IDE Controller
” is the default option. Up to 4 SATA and 2
PATA devices may be accessed in this mode. The SATA and PATA
controllers appear as two separate IDE controllers. Use this option
with Microsoft Windows 2000 and Windows XP.
• SATA 0 is seen as SATA Primary Device 0
• SATA 1 (if present) is seen as SATA Secondary Device 0
“Combined IDE Controller
” is the other option. Up to 2 PATA and 2
SATA devices may be accessed in this mode. The SATA and PATA
controllers appear as one combined IDE controller. Use this option
with Microsoft Windows 98 and earlier operating systems.
• PATA Primary Device 0 replaces SATA 1
• PATA Primary Device 1 replaces SATA 3
Table 8-2
Setup Utility
Heading Option Description
✎
Support for specific Computer Setup options may vary depending on the hardware configuration.