I started customizing live ubuntu cd. I followed all the steps in this post but i am not able to unmount the
/proc. Please look @ the below error.. The error says some process where running but i am not able to figure out the process.. Can anyone help ?
root@karthick:/# umount /proc/ umount: /proc: device is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1))