On Wed, 17 Mar 2004 23:15:20 -0500 [EMAIL PROTECTED] wrote:

| Is there any way to enable DMA on an external USB drive?  hdparm -d won't work.  If 
DMA can't be enabled, are there any similar methods for tuning that would allow the 
same type of performance increase?


No, USB disk drives all go thru USB host controller DMA.
It's not an interface option like it is for IDE/ATA.

Performance depends on USB host controller version, type, and
kernel version, which you haven't mentioned....

--
~Randy


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