This means you are trying to boot on a CPU without PAE support. The default kernel is compiled with PAE, so it won't run on a non-PAE CPU :-(
Maybe this one can help you : https://answers.launchpad.net/ubuntu/+source/linux/+question/33381 -- linux-image-2.6.24-13-openvz refuses to boot https://bugs.launchpad.net/bugs/210672 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs