The next thing to do is to create the /etc/mtab file. This is done using the following command: touch /etc/mtab As of LFS-Bootscripts 1.11 this file is handled correctly so there are no errors even when booting after a crash. Note that this requires support for the proc filesystem to be compiled into the kernel. This support is included by default. Don't remove it unless you really know what you are doing, as other important things also depend on it. In short, make sure proc filesystem support is enabled in the kernel.