At Wed, 12 May 2010 12:01:06 +0700 CentOS mailing list <centos@xxxxxxxxxx> wrote:
>
>
>
> I tried to change the configuration of a compatible sata in bios to AHCI, but my hard drive is not detected.
> I do not have a smart array controller. I do this AHCI features need smart array controller? I've been looking for a reference, but did not find.
>
> Any suggestions?
You could try adding the 'irqpoll' kernel parameter. Some AHCI
controllers are a little wonky WRT IRQ dectection (or maybe it is the
AHCI driver that has a problem with IRQ dectection). This is what
works for my nVidia chipset motherboard.
>
> --
> Best regards,
> David
> http://blog.pnyet.web.id
>
>
> On 05/12/2010 02:52 AM, Christoph Maser wrote:
> > Am Dienstag, den 11.05.2010, 11:38 +0530 schrieb Rajagopal Swaminathan:
> >> Greetings,
> >>
> >> On Tue, May 11, 2010 at 8:08 AM, David Suhendrik<david@xxxxxxxxxxxx> wrote:
> >>> @Rajagopal:
> >>>
> >>> This result:
> >>> # hdparm -tT /dev/hda5
> >>>
> >>> /dev/hda5:
> >>> Timing buffered disk reads: 8 MB in 3.08 seconds = 2.60 MB/sec
> >>>
> >>
> >> First of all it should report /dev/sda and not /dev/hda
> >>
> >> It is a horrible speed for modern disks.
> >>
> >>
> >> Modern SATA disks show around 50-80 MB/Sec
> >>
> >> I am sure ide0noprobe=no (or zero -- check docs) in the kernel mline
> >> will surely speed up in addition to other suggestions will
> >> dramatically speed up.
> >
> >
> > As will setting the operation mode in mode in BIOS from compatible to
> > SATA. First thing i do on all HP servers when they are shipped.
> >
> > Chris
> >
> > _______________________________________________
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> > http://lists.centos.org/mailman/listinfo/centos
> >
>
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