Reinhard Katzmann wrote:
>
> On Tue, Oct 03, 2000 at 08:10:22AM -0400, Dr Michael Powell PhD wrote:
> > The BEST! tip I have gotten is to set:
> >
> > hdparm -X66 -d1 -u1 -m16 -c3 /dev/hda [from any terminal]
>
> A word of warning should be said: Your bios and motherboard must support
> IDE ULTRA DMA/66 for this switches, which only do the quite new boards
> (I shortly tested a new Asus based PC which still used ATA/33). So check
> your motherboard documentation first! -X34 is secure for most boards today.
> Also the kernel must support the DMA features of your board, most certainly
> you need the unified IDE patch (which is included in the cooker kernel I
> supposem but is not adapted any longer to the latest stable kernel prepatches,
> as the author can no longer maintain it).
>
> > To see the drastic change first do a:
> >
> > hdparm -Tt /dev/hda then do the above command
> >
> > I forget the website where the tip came from, but this should at least
> > get you checking it out
> > If you have any problems, just re-boot and it will reset the defaults
> > again
>
> Website:
> http://oreilly.linux.com/pub/a/linux/2000/06/29/hdparm.html?page=1
> Usually this is no problem but it still can lead to severel file system
> corruption, so be sure to test it in single user mode on a test partition
> first (especially with reiserfs which has nearly no recovering tools
> up to now).
>
> Best regards
>
> Reinhard Katzmann
> --
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every motherboard since 1998 in these states have Ultra DMA 66 some have
UDMA 100 so there are virtually no problems unless you have an ancient
MB. with no bus mastering!
mickey
[EMAIL PROTECTED]
Linux registered 83815
