When is 595 , 640?

Bought my first external Hard Drive, it’s a WD Passport Essential 640 GB.

On installing it, the Hard Drive is rated at only 595 GB.

Anyone else experienced this or can offer an explanation for the difference ?

This article explains what you’re seeing.


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Thanks Bill_S.

I’ve read the Link and now understand the issue.

peter burns

That’s cool.

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