Change UDMA level in running system (was Re: disk problems or false alarm??)

[bit]

Am Sonntag 02 Mai 2004 13:26 schrieb Alexander Dalloz:
> [ Sorry, my first reply from yesterday got eaten by the list manager ]
>
[SNIP]
>
> Normally the kernel automatically sets the proper transfer rate and mode
> automagically. There are just few cases where it makes sense to override
> that manually.
>
> I does not only matter for which transaction mode your hard drive is
> capable but also which modes the IDE bus controller chip supports. Given
> that your motherboard/IDE controller supports UDMA5 too like your hard
> drive, then you can change the mode with:0)100MB/sec
>
> hdparm -X69 /dev/hdX
>
> But if your motherboard only supports ATA33 (UDMA2) or you have just a
> 40pin IDE ribbon cable the change will not happen or change anything.
>
[SNIP]
>
> Alexander
>
> P.S. Reading now that it was the wrong cable. One of the factors I
> mentioned.


Thanks for ur help !
Gotta wait until tomorrow, to by two new IDE cables. I still can't believe, 
that I never noticed that before. :-)

bit