Re: Convenient way to enable IDE DMA
On Mon, Aug 26, 2002 at 11:02:49PM +0200, Ian Eure wrote:
> Be warned, ide-scsi resets the using_dma flag when it's loaded. This is an
> even bigger problem with devfs, because after ide-cd is unloaded there is no
> /dev/hd? node to feed hdparm. The only workaround I've found so far is to
> create a temporary device node, /tmp/hdd, load ide-scsi, and `hdparm -d 1
> /tmp/hdd'.
The other way is
echo 'using_dma:1' > /proc/ide/hdd/settings
it still works after loading ide_scsi.
> Oh, you can get some pretty decent improvements with `hdparm -c 1' as well.
> It toggles 12/32-bit IDE transfer modes, and isn't reset by ide-scsi
This is true, but only important for non-dma operation.
Michael Karcher
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