DMA stands for Direct Memory Access, a capability in modern computers that allows peripheral devices to send data to the motherboard's memory without intervention from the CPU. The DMA controllers are special hardware - now embedded into the chip in modern integrated processors - that manage the data transfers and arbitrate access to the system bus. To enable DMA, follow this steps :
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- Right-click on My Computer, select Properties
- Select the Hardware tab
- Click the Device Manager button
- Double-click IDE/ATAPI controllers
- Double-click on the Primary IDE Channel
- 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.
- Set the Transfer Mode to "DMA if Available" both for Device 1 and 0
- Click OK
- Perform the same operation for other items in the list, if applicable.
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