Does sudden shut down due to power failure do any harm to the underlying OS or hardware ? My laptop's battery is dead, so sometimes due to power failure or due to some other reason there is an improper shutdown.

Does it cause any harm ?

  • 1
    besides filesystem corruption damage to the hardware is very unlikely. – Ramhound Nov 6 '13 at 17:53
  • @Ramhound Will you please elaborate ? – Suhail Gupta Nov 6 '13 at 18:21

If the operating has data in memory that has not been written, including updates to the directory, then a power loss would mean loss of data or corruption of the directory data. If the shutdown was at the worst time possible, it would be during a write operation in which case more than one file may be damaged.

A long time ago I was running the SCO Xenix operating system and I lost power during a storm. When the power came back the operating was so corrupted that I lost everything on the hard drive.

Regards Edawen


Well, theoretically at least, the OS sends signals, to hard disk for instance, so that it shuts it down (stops spinning). That being done abruptly could have some side-effect, but I believe it's hard to determine, depending on how the hardware is designed.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.