Created attachment 653516 [details] AWS EC2 messages Screen Description of problem: see summary Version-Release number of selected component (if applicable): ami-c18c1bfb How reproducible: always Steps to Reproduce: 1. instantiate ami-c18c1bfb 2. log-in to hte instance and do yum update -y kernel 3. reboot the instance 4. kernel panic Actual results: kernel panic: no root device having updated the kernel Expected results: kernel-update works as expected Additional info: ## last few boot-up lines; See the attached log for full AWS EC2 screen udev: starting version 147 dracut: Starting plymouth daemon dracut Warning: No root device "block:/dev/disk/by-label/_\x2f" found dracut Warning: Boot has failed. To debug this issue add "rdshell" to the kernel command line. dracut Warning: Signal caught! dracut Warning: Boot has failed. To debug this issue add "rdshell" to the kernel command line. Kernel panic - not syncing: Attempted to kill init! Pid: 1, comm: init Not tainted 2.6.32-279.14.1.el6.x86_64 #1 Call Trace: [<ffffffff814fd98a>] ? panic+0xa0/0x168 [<ffffffff81070c42>] ? do_exit+0x862/0x870 [<ffffffff8117d0a5>] ? fput+0x25/0x30 [<ffffffff81070ca8>] ? do_group_exit+0x58/0xd0 [<ffffffff81070d37>] ? sys_exit_group+0x17/0x20 [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b