> I have a lot of old kit around and can't for the hell of me figure out
> which drives do need and which ones don't want DMA, occasionally

i thought that dma problems were almost always controller/cable or master/slave
related?  almost all the device i deal with are sata these days.  and before
that, i stuck to scsi.

in any event, 
-  there's a knob because i was worried about breaking old stuff.
-  it's likely the ide driver, rather than hardware, causes this 
incompatability.

smiley, did the kernel with *sdC0dma support print anything different?

- erik

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