External USB hard drive makes noises when the computer is turned off

Posted by Amir Adar on Ask Ubuntu See other posts from Ask Ubuntu or by Amir Adar
Published on 2012-07-05T21:22:36Z Indexed on 2012/07/05 21:24 UTC
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I have an external USB hard drive of 500GB. I can't tell what model it is exactly, as nothing specific is written on it and I don't have the box anymore. I use it as a backup disk. It works absolutely fine when the computer is turned on: no problems with writing or reading, and everything is done in dead silence. However, if I turn the computer off and the disk is still connected, it stays on and makes clicking noises. For that reason I only connect it when I need to back up or restore. Does that mean there's a problem with the disk, or with some preferences in the system itself? Or something else?

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