problems enabling DMA

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I need to enable DMA for my NEC dvd-rw drive but I don't know how. I downloaded and installed hdparm but when I try "hdparm -d1 /dev/hda" I get "HDIO_SET_DMA ...

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04-18-2005 #1

daemmon

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Apr 2005

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problems enabling DMA

I need to enable DMA for my NEC dvd-rw drive but I don't know how. I downloaded and installed hdparm but when I try "hdparm -d1 /dev/hda" I get "HDIO_SET_DMA failed: Operation not permitted". Can anyone help me please?

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