Windows 8.1 file transfer window screenshot courtesy ofim really famecore.
The Answer
SuperUser contributors Valmiky Arquissandas and Richard have the answer for us.
That is because during the first few seconds, it just does the operation it has to do.
That gives you theaverage speedof the operation.
This is elementary school math.
Well, the speed is 1 km/minute, so that is 60 km/hour.
Substitute travel with copy, km with bytes, and that answers your question.
Different systems have different ways of estimating time.
you’re free to take the last minute and the estimates may vary wildly.
What I described is the simplest method.
When shortening time expressions in progress dialogs, should they be rounded up or down?
He also explains why it can be wrong.
Why does the copy dialog give such horrible estimates?
