I get it now, thank you very much! :)

I use gpuPlotGenerator.

Files look like this:

First one: ID_0_2048000_8192
Second one: ID_2048000_4096000_8192

Hi guys,
I plan to mine burst with an empty 4TB hdd. The idea was to plot 8 plots of 500GB. I've set the first plot from 0 to 2048000 onces and when I finished plotting, the size of the plot showed as 500GB which is ok. The second one I set from 2048000 to 4096000 but this one is 970GB. How is that possible? Am I setting the nonces wrong?

Thanks!