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The default setting “Auto” will allow auto detection to ensure optimal
performance.
4.6.2 On-Chip Primary/Secondary PCI IDE
If you enable IDE HDD Block Mode, the enhanced IDE driver will be
enabled. Leave IDE HDD Block Mode on the default setting.
Figure 4.7: On Chip IDE Device
4.6.3 IDE HDD Block Mode
You can enable the Primary IDE channel and/or the Secondary IDE chan-
nel. Any channel not enabled is disabled. This field is for systems with
only SCSI drives.