I have 13 network cards (a network simulator lab) and unchecking "available to all users" did not solve my problem
Poweroff shuts down the computer
Halt does not
In both cases I still see the message "mount / is busy"
This is not a fresh vanilla system, it went through upgrades since version 10 I guess (software raid was in beta at that time if I remember correctly or it was not widely available)
I am still facing this problem.
Distributor ID: Ubuntu
Description: Ubuntu 14.04 LTS
Release: 14.04
Codename: trusty
I have 13 network cards (a network simulator lab) and unchecking "available to all users" did not solve my problem
Poweroff shuts down the computer
Halt does not
In both cases I still see the message "mount / is busy"
This is not a fresh vanilla system, it went through upgrades since version 10 I guess (software raid was in beta at that time if I remember correctly or it was not widely available)