On 2 Sep 2003 at 9:15, Shantanu Kumar wrote:
> While scanning the output of 'dmesg', I spotted a line saying
> this:
>
> ide: Assuming 33MHZ system bus speed for PIO modes; override with
> idebux=xx
>
> My motherboard has a 100MHZ FSB, I know for sure. Then how come
> dmesg is
> reporting a figure of 33MHZ? Do I need to make changes in my
> configration
> somehwere? Please guide me.
Do a hdparm -i /dev/hda and see the DMA mode information. Check the * which
indicates active mode.
If you are in UDMA mode, I guess there is nothing much to worry about. You are
already getting best mode.
And turn on the DMA..
hdparm -i /dev/hda shows UDMA mode 2 (*udma2) as active and other modes 0 to 4
as available. Also DMA modes (mdma) 0 to 2 are avilable.
hdparm /dev/hda shows DMA is already turned on (=1). And IO_support shows the
default (=0, 16 bit).
Do I need to edit /etc/sysconfig/harddisks ? I haven't touched this file since I
installed Redhat 9 on my Pentium-III 550MHz box with 192 MB RAM. And believe
me, it is *dog* slow and also my i-ball mouse freezes up often once in a while.
Please let me know if there's something important that I need to learn.
Regards, Shantanu
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