[How is fragmentation calculated?]

Thank you for your very fast reply

 

fyi: It's my second hard drive. Only data (holiday pictures/videos), no operating system. I don't think there are locked microsoft files.

[How is fragmentation calculated?]

Hi,

 

I just downloaded Defraggler and analyzed a (non ssd) hard drive. According to defraggler there is 31% fragmentation.

 

The Windows 10 build-in defragmentation tool states the same drive with 0% fragmentation.

 

Why is there such a gap between those two tools?

 

Thank you for clarification.

 

Casper