On May 30, 2002 11:00 am, Tom Brinkman wrote: > On Thursday 30 May 2002 06:48 am, Rui Maia wrote: > > I don�t know if this will help you (but i think yes..) > > ...see the hdparm man page. > > From: "Richie de Almeida" > > >> I got a new mobo and cpu and loaded on Mandrake 8.2 and since the > >> ide has UltraDMA 100 I set the boot parameter to idebus=100 but the > >>kernel turns this down saying its a "bad bus speed". I did a dmesg > > As Charles already posted, idebus= is the PCI bus speed, and that > is 33 for _any_ i586 or higher system. See /usr/src/<kernel version> > /Documentation/ide.txt > > As to hdparm, I found that with 8.2 and the default 2.4.18-6 > kernel, any hdparm settings were ignored. ata/100 drives still ran > at ata/33. I found installing a newer kernel instantly fixes the > situation. I'm usin 2.4.18-13 and no hdparm or lilo settings. My > ata/100 drives run at udma5, ata/100, hdparm -t returns 40+mb/sec.
Many thanks, installing a later version of kernel helped, I'm on 2.4.18-17mdk and hdparm reports I'm using udma5 instead of udma2. Richie
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