Hi all, I had an issue this morning with one of my virtual machines. It wouldn't boot (into any runlevel), nor could I chroot into the root partition using a rescue disk. Unfortunately I didn't grab a screenshot, however the error(s) when booting were: /pre-pivot/50selinux-loadpolicy.sh: 14 <other messages> init: readahead main process (425) killed by SEGV signal init: readahead-col lector main process (421) killed by SEGV signal init: rcS pre-start process (425) killed by SEGV signal init: Error while reading from descriptor: Bad file descriptor init: readahead-col lector post-stop process (424) killed by SEGV signal init: rcS post-stop process (427) killed by SEGV signal init: readahead-disable-services main process (428) killed by SEGV signal When using a rescue CD and chrooting into the root partition, I would get : Segmentation Fault: Core Dumped In the end, the fix was to boot into a rescue CD with networking, and SCP the entire contents of /bin and /sbin from another (working) server to the broken installation. This finally allowed CentOS 6 to boot correctly. So I'm left to assume some of the files in /bin *or */sbin were corrupt. My question is, does anyone have any ideas on how this might have happened? I did do a quick memory test using the rescue CD (it didn't complete) and there weren't any errors. The virtual machine is running on VMWare with 3 other VMs, which all seem fine. There wasn't any unexpected power loss either. Thanks.