Tom Gundersen wrote: As of udev-176, the Arch Linux userspace tools will no longer be able to boot kernels without devtmpfs support. The official Arch kernels (`kernel26-lts` and `linux`) have both had devtmpfs support for a long time, so only people who compile their own kernels are potentially affected by this change. More information about the kernel options required by udev is available in the udev [README][1]. [1]: here: http://git.kernel.org/?p=linux/hotplug/udev.git;a=blob_plain;f=README URL: http://www.archlinux.org/news/users-of-unofficial-kernels-must-enable-devtmp...