XP system How to manually change the IDE channel to DMA mode
1, right click on "My Computer", select "Properties", click the "Hardware tab", tap "Device Manager" open),
2, click to expand the "IDE ATA/ATAPI Controller" branch, double-click "PRimary IDE Channel", click Advanced Settings. Computer knowledge
3. Check the "transfer Mode" Pull-down menu and set them all to DMA If Available (DMA allowed), click OK.
After you have completed these three steps, you will be able to switch back to DMA mode successfully. If you have more than one IDE controller, the same method is used to modify it. If friends have a more convenient way, welcome to the small group message interaction Oh.