Commands are given below :-
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* To enable DMA for a hard drive: hdparm -d1 /dev/hda * To disable DMA for a hard drive: hdparm -d0 /dev/hda
* To measure transfer rate of a hard drive: hdparm -Tt /dev/hda
* To see what options are enabled for a hard drive: hdparm /dev/hda
* To see more info on your drive than you wanted to know: (this will show which UDMA modes are supported/enabled) hdparm -i /dev/hda
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