But isn't -c 1 for PIO only? I didn't think it effects DMA operation.....
....it turns on the 32 bit flag. My DMA is already on..... Putting hdparm -c /dev/hda in the boot.local file seems to work fine by the way! Cheers Rich
Um, I notice that my drives are in the 16 bit mode....I can set them with
hdparm -c 1 /dev/hda
But how do you make them boot that way?
OK - it does look like the drive so far, but the unbuffered speeds look like DMA is turned off. Let's see if that helps:
hdparm -v /dev/hda will tell us how the drive is set up hdparm -c 1 -d 1 /dev/hda should enable DMA if it's off hdparm -tT /dev/hda will test speeds again
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