On Mon, 20 Nov 2017 20:40:49 +0000, Scott wrote:

What's your external drive? For instance, I have a LaCie Rikiki which
doesn't have any moving parts. AFAIK there's no point in trying to
defragment it, just like you wouldn't defragment a USB flash drive.

WD My Book 4TB.

Technical Specs nor Product Overview show what sort of hdd is inside.
Maybe contact WD Support and ask them about defragmenting?

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