Stupid question of the day

Are full hard drives heavier than empty hard drives?

I read about this in the Talk page of the article about disk drives in the German Wikipedia.

What sounds like a pretty stupid question (it probably is), might still have a pretty interesting answer. Any physics students (electrical engineering? computer science?) out there who can enlighten us? Are there any scientific studies about such issues? There are some theories (German, sorry), but I'm not sure whether that's more than random guesses...

Other stupid questions from the articles above: Are charged cell phone batteries heavier than empty ones? Are Word documents with bigger fonts heavier?

My head hurts...

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Your question is answered in

Your question is answered in Stanisław Lem's short story Professor Affidavit Donda, first published in his 1976 book The Mask.

Btw, you may be also intereseted in an efficient method of cooling your computer. You need to find a ftp server which allows anonymous upload, and transfer the contents of your /dev/random to it. In this way, you transfer entropy (and, therefore, heat) from your computer over the network. :P

10^-17 ;)

$ units
2084 units, 71 prefixes, 32 nonlinear units

You have: joule / energy
You want: kg
* 1.1126501e-17
/ 8.9875518e+16

(according to /usr/share/misc/units.dat this is supposed to give a sane result)