cgkanchi,

Thanks, for the explanation.

Linux resets the permissions of the directory to whatever is specified in the fstab file for that file. If the fstab file is empty or says "defaults" in the options section, Linux will only allow root to read and write to and from that device.
You have to either specify the option "user" when mounting the partition (or in fstab) or (better option) add a valid umask to the fstab file. "man mount"
That makes sense and is hereby stored in the brain bank for later withdraw.

cheers