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 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 >