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 Suhendrikdavid@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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