At beginning I can't believe until I touch the casing and detach it.
Attempted to open it by viewing a video from Youtube. From the video, it is so compact that nothing I can do event I think I can open it.
From below two links, it seems nothing I can do now, except have an eye on it to prevent data lost. Important data shall be migrated to my NAS.
http://askubuntu.com/questions/342976/how-to-reset-smart-results
http://superuser.com/questions/697384/why-is-the-temperature-so-low-and-airflow-temperature-so-high-on-my-hd
Just now, I re-plug to the USB, running for few minutes on 34'C
For another alert "19 bad sectors" in another disk, my plan is to migrate data out of/dev/sda10 and format it to try my luck, since fsck doesn't overcome it. Its temperature is also 8'C higher than its neighbour - a 2TB HDD, maybe it is getting old truly.
More discussion about bad sectors.
http://ubuntuforums.org/showthread.php?t=2061312
http://www.howtogeek.com/howto/37659/the-beginners-guide-to-linux-disk-utilities/
