Hi to everyone, i have a broken seagate hdd which my phd thesis' files are inside. I appreciate if someone identifies what the problem is. When i plug it to power, the head moves forward and back several times (like 20 secs) and than it stops spinning. Thank in advance for every help.

You already opened it ??
Maybe your thesis is gone now...

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Assuming that you are screwed without the thesis, you should stop messing with your drive and contact a reputable data recovery lab.

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Luke
RAID Data Recovery

ahhh, clicking 7200.11 opened by a user, what a beauty

Why is that? i didnt touch any part especially the magnetic spin. i opened it to show you the behaviour of the head, filmed it and closed. i appreciate any help

The problem is the dust particles. Harddisks should only be opened in cleanrooms with dust-free air.

In addition, when the lid is closed there is air pressure inside the drive allowing the heads to "float" on a cushion of air, thus not touching the platters.

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PC Image Data Recovery
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So to make air pressure drive has air compressor inside, right?
2 TS
Your problem most likely in bad heads. I would recommend to go to pro.