Silicon Graphics Rackable C2108-TY10 User Manual page 96

7: BIOS
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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
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