The fault was the drive was not rotating up to full speed and then ticking constantly.
Opening the drive, I found out why:
|Head is missing from this Seagate Barracuda|
|Full of dirty ground up filings|
|Soiled dust filter|
This website explains the phenomenon of the platter coating coming off and confirms that these drives suck so many ways!
Here is some photos of another drive of the same model. This one has a bearing issue, constant squealing. A good reason to avoid these drives!
p.s the 720011 and the 7200.12 are also plagued by others problems. Best to stay away from them as well...