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Chapter 4: AMI BIOS
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 rate of 16.6 MBs. This setting generally works with all hard disk drives
manufactured after 1999. For other disk drives, such as IDE CD-ROM drives,
check the specifications of the drive.
DMA Mode
Select Auto to allow the BIOS to automatically detect IDE DMA mode when the
IDE disk drive support cannot be determined. Select SWDMA0 to allow the BIOS
to use Single Word DMA mode 0. It has a data transfer rate of 2.1 MBs. Select
SWDMA1 to allow the BIOS to use Single Word DMA mode 1. It has a data
transfer rate of 4.2 MBs. Select SWDMA2 to allow the BIOS to use Single Word
DMA mode 2. It has a data transfer rate of 8.3 MBs. Select MWDMA0 to allow
the BIOS to use Multi Word DMA mode 0. It has a data transfer rate of 4.2 MBs.
Select MWDMA1 to allow the BIOS to use Multi Word DMA mode 1. It has a data
transfer rate of 13.3 MBs. Select MWDMA2 to allow the BIOS to use Multi-Word
DMA mode 2. It has a data transfer rate of 16.6 MBs. Select UDMA0 to allow
the BIOS to use Ultra DMA mode 0. It has a data transfer rate of 16.6 MBs. It
has the same transfer rate as PIO mode 4 and Multi Word DMA mode 2. Select
UDMA1 to allow the BIOS to use Ultra DMA mode 1. It has a data transfer rate
of 25 MBs. Select UDMA2 to allow the BIOS to use Ultra DMA mode 2. It has
a data transfer rate of 33.3 MBs. Select UDMA3 to allow the BIOS to use Ultra
DMA mode 3. It has a data transfer rate of 66.6 MBs. Select UDMA4 to allow
the BIOS to use Ultra DMA mode 4 . It has a data transfer rate of 100 MBs. The
options are Auto, SWDMAn, MWDMAn, and UDMAn.
S.M.A.R.T. For Hard disk drives
Self-Monitoring Analysis and Reporting Technology (SMART) can help predict
impending drive failures. Select Auto to allow the AMI BIOS to automatically de-
tect hard disk drive support. Select Disabled to prevent the AMI BIOS from using
the S.M.A.R.T. Select Enabled to allow the AMI BIOS to use the S.M.A.R.T. to
support hard drive disk. The options are Disabled, Enabled, and Auto.
32-Bit Data Transfer
Select Enabled to enable 32-Bit data transfer. The options are Enabled and
Disabled.
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