hey friends, I ran short of space on my server FC3 today I installed 200 GB hard disk on the server. Created new partitions and in init 1 level transfer the data of /home and some other data partitions onto the new hard disk. I used cp -rvp for copying the contents. Everything is working fine except I can't su - to root or to any user. I checked the logs in init 1 level it shows pam_timestamp_check: pam_timestamp: '/' owner GID!=0 Than I chown root.root / Now the above message is not coming but the below messages are there unix_chkpasswd[4605]: password check for user(xxxxx) mail su (pam_unix) [4604]: authentication failure: logname=uid=600 euid=600 tty = ruser=xxxx rhost = user=root I am giving the correct password but I am not able to su - where can be the problem. Thanks & Regards Ankush Grover