Years ago, I had a similar problem. The point was the HD drivers. The interface was Serial ATA (SATA) and the driver supporting it, was SCSI kind, not ATA. It is surprising the problem still persist nowadays, except if you had compiled your ouw kernel with the wrong driver indication. I'm not too expert in that matter. So take my indication with care. Look at this: http://linux-ata.org/ Regards. PD: I'm sorry for my bad english --- El lun, 10/8/09, John R Pierce <pierce at hogranch.com> escribió: De: John R Pierce <pierce at hogranch.com> Asunto: Re: [CentOS] error --- > any idea ?? Kernel: Additional sense: Invalid command operation code Para: "CentOS mailing list" <centos at centos.org> Fecha: lunes, 10 agosto, 2009 9:32 cornel panceac wrote: > > > 2009/8/10 Agnello George <agnello.dsouza at gmail.com > <mailto:agnello.dsouza at gmail.com>> > > Hi All > My system is CentOS release 4.4 (Final) and for the last few days > my system si getting rebooted ... i really cant find out any > reason why ... but on the messages found in the var/log/ ...here > is what i got . > > Aug 10 04:31:34 spam2 kernel: FAILED > Aug 10 04:31:34 spam2 kernel: status = 1, message = 00, host = 0, > driver = 08 > Aug 10 04:31:34 spam2 kernel: Current sd: sense key Illegal Request > Aug 10 04:31:34 spam2 kernel: Additional sense: Invalid command > operation code > > sounds like a defective storage device . or storage controller or storage cabling _______________________________________________ CentOS mailing list CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20090810/9f79ea63/attachment-0003.html>