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?

--
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@pnyet.web.id> 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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At Wed, 12 May 2010 12:01:06 +0700 CentOS mailing list <centos@centos.org> 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@pnyet.web.id> 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
> >
> > _______________________________________________
> > CentOS mailing list
> > CentOS@centos.org
> > http://lists.centos.org/mailman/listinfo/centos
> >
>
> MIME-Version: 1.0
>
> _______________________________________________
> CentOS mailing list
> CentOS@centos.org
> http://lists.centos.org/mailman/listinfo/centos
>
>

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Thanks for the help, a solution to this problem is to update the bios,
and after using the newest version of bios I can use AHCI mode on the
sata controller, and indeed this is the problem.

But I had to install windows server to update the bios, then installed
again using Linux.

--
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@pnyet.web.id> 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
>
> _______________________________________________
> CentOS mailing list
> CentOS@centos.org
> http://lists.centos.org/mailman/listinfo/centos
>
_______________________________________________
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Am Samstag, den 15.05.2010, 09:04 +0700 schrieb David Suhendrik:
> Thanks for the help, a solution to this problem is to update the bios,
> and after using the newest version of bios I can use AHCI mode on the
> sata controller, and indeed this is the problem.
>
> But I had to install windows server to update the bios, then installed
> again using Linux.
>
> --
> Best regards,
> David
> http://blog.pnyet.web.id
>

Usually you can download a bootable CD Image from HP for BIOS updates.

Chris


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David Suhendrik wrote:
> Thanks for the help, a solution to this problem is to update the bios,
> and after using the newest version of bios I can use AHCI mode on the
> sata controller, and indeed this is the problem.
>
> But I had to install windows server to update the bios, then installed
> again using Linux.
>

you can put most windows-only flash updaters and such on a USB stick or
CD with Hirens Boot or similar, and run them from there.
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