Hi all folks, Permission changed back to its original state after rebooting the PC Test performed as follows; $ ls -l /dev/modem lrwxrwxrwx 1 root tty 11 Apr 22 12:24 /dev/modem -> /dev/ttyLT0 $ ls -al /dev/ttyLT0 crw-rw-rw- 1 root uucp 62, 64 May 23 12:18 /dev/ttyLT0 As ROOT # chmod 777 /dev/ttyLT0) # ls -l /dev/ttyLT0 crwxrwxrwx 1 root uucp 62, 64 May 23 11:38 /dev/ttyLT0 After rebooting the PC it changed back again $ ls -al /dev/ttyLT0 crw-rw-rw- 1 root uucp 62, 64 May 23 12:18 /dev/ttyLT0 Kindly advise how to solve this problem. Thanks in advance. B.Regards Stephen Liu -- Psyche-list mailing list Psyche-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/psyche-list