Hmm, Seems there is a problem: I had discovered in the maxtor web site the answer ID 2685 that speak about my problem: Note: This solution is only to be applied to the listed products and only when used with the nForce4 chipset. If you are unsure as to which chipset you have, contact your motherboard manufacturer or visit your motherboard manufacturer's website for clarification. Maxtor SATA II Drives and nVidia nForce4 Compatibility Question The following issues have been identified with Maxtor SATA II drives and the nVidia nForce4 controller. No detection Anomalous behavior such as data corruption Answer The drives affected are those with model numbers starting with: 6V- (DiamondMax 10) 6H- (DiamondMax 11) 7V- (Maxline III) 7H- (MaxLine Pro 500) A firmware upgrade to resolve these issues for Maxtor SATA II drives is available by contacting Maxtor Support. Please have the drive serial number and the Code number available, which will be listed on the top label of the drive itself. Contact Maxtor Online: North, Central and South America Europe, Middle East, and Africa Asia, Australia, and New Zealand Please see our Contact Pages for telephone support options: North/Central/South America Europe, Middle East and Africa Asia, Australia and New Zealand -----Oorspronkelijk bericht----- Van: centos-bounces at centos.org [mailto:centos-bounces at centos.org] Namens William L. Maltby Verzonden: zondag 2 april 2006 16:38 Aan: CentOS General List Onderwerp: RE: [CentOS] CentOS 4.3 occasionally locking up accessing IDE drive On Sun, 2006-04-02 at 11:36 +0100, Dave Hatton wrote: > I've just had a similar problem but with SATA drives. > > I discovered some reports of problems when smartctl scans were issued > against running drives. > > For me the fix was to turn off SMART monitoring (service smartd stop && > chkconfig smartd off). I put this here just to have your answer and this suggestion in one place. Has anyone checked the Mfg's (HD, controller, MoBo) web sites to see if probs reported/solved? Has anyone tried hdparm to "adjust" tunables to see if it makes a difference? I suspect not, based on what Dave is saying, but never know? Also, no reason to believe y'all are the absolute first. Now sounds like Google might be productive? > > Daveh Bill