Bull Novascale R423-E2, Installation And User Manual, Page: 93 / 146

Chapter 7: BIOS
7-13
Primary IDE Master/Slave, Secondary IDE Master/Slave, Third IDE
Master, and Fourth IDE Master
These settings allow the user to set the parameters of Primary IDE Master/
Slave, Secondary IDE Master/Slave, Third and Fourth IDE Master slots. Hit
<Enter> to activate the following submenu screen for detailed options of these
items. Set the correct configurations accordingly. The items included in the
submenu are:
Type
Select the type of device connected to the system. The options are Not Installed,
Auto , CD/DVD and ARMD.
LBA/Large Mode
LBA (Logical Block Addressing) is a method of addressing data on a disk drive. In the
LBA mode, the maximum drive capacity is 137 GB. For drive capacities over 137 GB,
your system must be equipped with a 48-bit LBA mode addressing. If not, contact your
manufacturer or install an ATA/133 IDE controller card that supports 48-bit LBA mode.
The options are Disabled and
Auto .
Block (Multi-Sector Transfer)
Block Mode boosts the IDE drive performance by increasing the amount of data
transferred. Only 512 bytes of data can be transferred per interrupt if Block Mode is
not used. Block Mode allows transfers of up to 64 KB per interrupt. Select Disabled to
allow data to be transferred from and to the device one sector at a time. Select Auto
to allow data transfer from and to the device occur multiple sectors at a time if the
device supports it. The options are
Auto and Disabled.
PIO Mode
The IDE PIO (Programmable I/O) Mode programs timing cycles between the IDE drive
and the programmable IDE controller. As the PIO mode increases, the cycle time
decreases. The options are
Auto
, 0, 1, 2, 3, and 4.
Select Auto to allow the AMI BIOS to automatically detect the PIO mode. Use this value
if the IDE disk drive support cannot be determined.
Select 0 to allow the AMI BIOS to use PIO mode 0. It has a data transfer rate of 3.3
MBs.
Select 1 to allow the AMI BIOS to use PIO mode 1. It has a data transfer rate of 5.2
MBs.
Select 2 to allow the AMI BIOS to use PIO mode 2. It has a data transfer rate of 8.3
MBs.
Select 3 to allow the AMI BIOS to use PIO mode 3. It has a data transfer rate of 11.1
MBs.
Select 4 to allow the AMI BIOS to use PIO mode 4. It has a data transfer bandwidth
of 32-Bits. Select Enabled to enable 32-Bit data transfer.