What is/MDEV?
mdev is a udev replacement from BusyBox, it populates and updates /dev ( official docs ). Replacing eudev or udev is non-trivial, and is probably most adapted to embedded systems.
How do I Mount devpts on Ubuntu?
An explicit mount devpts command is required. The standard solution for udev-based systems is to run rc-update add udev-mount sysinit as root, and have the udev-mount script do the mounting at startup. An mdev-based system will probably not have udev installed.
How do I mount a udev-Mount in Linux?
The standard solution for udev-based systems is to run rc-update add udev-mount sysinit as root, and have the udev-mount script do the mounting at startup. An mdev-based system will probably not have udev installed. An alternative way to do this at bootup is to include the command mount devpts in a shell script in /etc/local.d/.
Does MDEV support auto-modules loading?
This set of instructions was originally written by Walter Dnes and hosted at his personal website. It was imported to the Gentoo wiki with some editing by Michael Mol per discussion on the gentoo-user mailing list. mdev unlike udev does not support auto-modules loading.