Hi, following system: Dell PE2650, 2 2.4ghz Xeon, 1gb ram, Dell Perc4DC Controller It has EL5 installed, but I wanted to change to Centos because of the missing workstation packages in the entry server repository. The system was redhat up2date until yesterday, so the latest kernel was missing. I changed redhat-release to centos-release packages and the new centos kernel was installed the via yum. This kernel does not boot. Error messages: i20:iop0: Get status timeout i20:iop0: Reset timeout i20:iop0: could not reset controller i20:iop0: Reset timeout kernel panic Here are my findings when setting emulation in scsi adapter bios to i2o: - initial redhat el5 install fails, no adapter found (mayby centos install is affected, too, have to set to 'mass storage' to install) - redhat's kernel-2.6.18-8.1.1.el5 and kernel-2.6.18-8.1.3.el5 boot with i20 enabled - centos latest 2.6.18-8.1.3.el5 does not! error messages above - setting to 'mass storage' all is fine Is this really a centos kernel problem (I read in centos kernel changelog about special centos changes), or is this for any reason because this is actually a redhat system? Thx Rainer