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UltraDMA-66 IDE Controller

Common Options : Enabled, Disabled

Quick Review

This BIOS feature is only found in certain motherboards that come with an additional built-in IDE controller. It allows you to enable or disable the function of that IDE controller.

If you want to attach one or more IDE devices to the external UltraDMA/66 controller, you should enable this feature. You should only disable this BIOS feature for the following reasons :-

  • if you do not have any IDE device attached to the external UltraDMA/66 controller
  • for troubleshooting purposes

Disabling the external IDE controller will free up two IRQs which can be used by other devices in the system. It will also speed up the boot-up sequence because the external IDE controller's BIOS no longer needs to be loaded. Your system will also be able to skip the external controller's long boot-up check and initialization sequence.

Therefore, if you do not use the external IDE controller, it is recommended that you disable it for a much faster booting process.


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