Hi William I didn't trun acpi back on (it's a sure way to freeze the computer). I did however find out that Linux ignores the RAID1 that is set by the SIL SATA card I have installed :-( See my last post (just a few minutes ago) with more details. -- TIA Paolo -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20090203/1b64501a/attachment-0004.html>