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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