Hi. =) I'm trying to install the SL 5.5, against the Serverboard Intel S500XSL<http://www.intel.com/p/en_US/support/highlights/server/s5000xsl>and its on-board Intel® Embedded Server RAID Technology II RAID (Intel® ESRT-2 SATA & SAS Software RAID). I'm fighting five days in this battle =). I have two servers with this hardware configuration. I followed the instructions in the Intel's Support: - http://downloadcenter.intel.com/confirm.aspx?httpDown=http://downloadmirror.intel.com/18570/eng/ESRT2_Linux_v.14.00.1203.2010.zip&lang=eng&Dwnldid=18570 - http://downloadmirror.intel.com/18570/eng/ESRT2_RHEL4-5-6_SLES10-11_v.14.00.1203.2010_Readme.txt But i didn't have success. I tried the RHEL 5.3, to test the driver files. The installation occurred with no probs, I used the boot kernel parameters: "linux dd" and the megasr driver files (megasr-14.00.1203.2010-1-rhel50-u3-all.img). The RHEL 5.3 recognized the raid controller. I tried all images (and drive files) against the SL 5.5, but all failed. What can I do? Any ideas? Links: http://www.intel.com/p/en_US/support/highlights/server/s5000xsl http://www.intel.com/support/motherboards/server/sb/CS-022358.htm Thanks, Duca.