How to enable direct memory access or DMA?

How to enable direct memory access or DMA?

Follow this steps:-
1. Right-click on My Computer, select Properties.
2. Select the Hardware tab.
3. Click the Device Manager button.
4. Double-click IDE/ATAPI controllers.
5. Double-click on the Primary IDE Channel.
.....
6. Click on the Advanced Settings tab (as shown in figure) The
tab may or may not be available for each option. It is only
available in Primary and Secondary Channels.
7. Set the Transfer Mode to "DMA if Available" both for Device
1 and 0.
8. Click OK.
9. Perform the same operation for other items in the list, if
applicable.
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