SUPER MICRO Computer AS1020S-8 - Manual (Page 73)

Chapter 7: BIOS
7-3
IDE Confi guration
Onboard PCI IDE Controller
The following options are available to set the IDE controller status: Disabled will
disable the controller. Primary will enable the primary IDE controller. There is
no Secondary option since only one IDE slot is provided on the board.
Primary IDE Master/Slave
Highlight one of the two items above and press <Enter> to access the submenu
for that item.
Type
Select the type of device connected to the system. The options are Not In-
stalled, Auto, CDROM 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 of over 137 GB, your system must be equipped with 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 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 the data to be transferred from and to the device
one sector at a time. Select "Auto" to allows the 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
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
AMI BIOS to auto detect the PIO mode. Use this value if the IDE disk drive
support cannot be determined. Select 0 to allow AMI BIOS to use PIO mode