Not necessarily. It varies by manufacturer, and some manufacturers use both methods for the various HD’s they make. Both work just fine, and both have their strengths and weaknesses.
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Cake day: August 9th, 2023
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Former industry guy here.
Some HD’s park the head on a plastic ramp at the OD of the platter stack. I don’t see that structure in your picture.
Others park the head on the platter itself. This area is always not usable area, since contact isn’t great for data integrity. This is a simpler solution but comes at the cost of reduced data capacity.
I don’t recall if this park area is on the ID or OD (it’s been a long time), but the position in your picture is reasonable since it would cost less disk area…
I don’t know about y’all, but I’m trying to find ways to resist what’s coming. They want to fuck us over. Don’t make it easy!