At Wed, 12 May 2010 12:01:06 +0700 CentOS mailing list <centos at 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 at 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 at centos.org > > http://lists.centos.org/mailman/listinfo/centos > > > > MIME-Version: 1.0 > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- Robert Heller -- Get the Deepwoods Software FireFox Toolbar! Deepwoods Software -- Linux Installation and Administration http://www.deepsoft.com/ -- Web Hosting, with CGI and Database heller at deepsoft.com -- Contract Programming: C/C++, Tcl/Tk