On 2007-10-23, wong_powah@yahoo.ca <wong_powah@yahoo.ca> wrote: > I modify /etc/inittab so that mgetty should work in single user > mode. However it does not work in single user mode but work in > runlevel 6. Why? > s1:12345:respawn:/sbin/mgetty /dev/ttyS1 -s 115200 -r > In single user mode, the file /etc/nologin is created. Users cannot normally log in while that file exists. You could modify the /etc/pam.d files to remove references to pam_nologin, or you could use a different runlevel (in Debian-based distros, runlevels 2-5 are identical ny default).