I'm on a Supermicro server, X9DA7 motherboard, Intel C602 chipset, 2x 2.4GHz Intel Xeon E5-2665 8-core CPU, 96GB RAM, and I'm running CentOS 6.4. I just tried to use yum to upgrade the kernel from 2.6.32-358 to 2.6.32-431.29.2. However, I get a kernel panic on boot. The first kernel panic I got included stuff about acpi, so I tried adding noacpi noapic to the kernel boot parameters, which at least changed the kernel panic message, now I get (transcribed from a photo I took, so please excuse any errors): Kernel panic - not syncing: Attempted to kill init! Pid: 1, comm: init Not tainted 2.6.32-431.29.2.el6.x86_64 #1 Call Trace: (excluding addresses, please let me know if they're good for anything) panic do_exit fput do_group sys_exit_group system_call_fastpath My grub.conf entry looks like this currently: title CentOS (2.6.32-431.29.2.el6.x86_64) root (hd0,0) kernel /boot/vmlinuz-2.6.32-431.29.2.el6.x86_64 ro root=UUID=ca1e1248-0a65-4b6c-9f87-0c859eab1f17 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto rhgb quiet nomodeset rdblacklist=nouveau KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM verbose selinux=0 enforcing=0 noacpi noapic nolapic nouveau.modeset=0 initrd /boot/initramfs-2.6.32-431.29.2.el6.x86_64.img (With all the options I added to see if it would work, including a couple from a very similar box that runs fine with that kernel, but on CentOS 6.5.) This box has a bunch of cards in it, including some NVidia GPUs in a PCI expander, another NVidia GPU for the GUI, an Areca controller, a Mellanox IB adapter, and some other stuff. But, I'm pretty sure this must be something simple I'm missing. Ideas for figuring it out? -- Joakim Ziegler - Supervisor de postproducción - Terminal joakim at terminalmx.com - 044 55 2971 8514 - 5264 0864