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PIO Mode
The Programmed Input/Output mode is a data transfer method
that uses the CPU registers to transfer data.
Settings
Description
Auto
The Programmed Input/Output mode is automatically selected.
0
Maximum transfer rate of 3.3 MB/s. Cycle time: 600ns. Defined
in ATA specification.
1
Maximum transfer rate of 5.2 MB/s. Cycle time: 383ns. Defined
in ATA specification.
2
Maximum transfer rate of 8.3 MB/s. Cycle time: 240ns. Defined
in ATA specification.
3
Maximum transfer rate of 11.1 MB/s. Cycle time: 180ns. Defined
in ATA-2 specification.
4
Maximum transfer rate of 16.7 MB/s. Cycle time: 120ns. Defined
in ATA-2 specification.
DMA Mode
The Direct Memory Access mode is a data transfer method that
bypasses the CPU and directly transfers between the system
memory and the connected IDE device.
Settings
Description
Auto
The Direct Memory Access mode is automatically selected.
S.M.A.R.T.
Self Monitoring Analysis and Reporting Technology, a monitoring
system for hard disks that can be used to help detect potential
hard drive failure.
Settings
Description
Auto
Detects if the connected hard disk supports S.M.A.R.T. and
enables or disables the feature accordingly.
Disabled
Disables the feature in the BIOS.
Enabled
Enables the BIOS to take advantage of S.M.A.R.T. enabled hard
drives.
32Bit Data Transfer
Settings
Description
Disabled
Disables the feature in the BIOS.
Enabled
Enables the hard disk controller to package data into 32-bit
chunks (instead of 16-bit) to increase the performance of data
transferring.
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