How can DMA be enabled for the device /dev/hda?
A.
echo “1” >/proc/ide/hda/dma
B.
sysctl -w dev.ide.dma=1
C.
dma add /dev/hda
D.
hdparm -d 1 /dev/hda
E.
insmod dma dev=/dev/hda
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D.
hdparm -d 1 /dev/hda
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