casperk 0 Posted September 30, 2017 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 Share this post Link to post Share on other sites
Nergal 0 Posted October 1, 2017 Defraggler sees locked microsoft files which windows ignores their effect on the fragmentation. At least that's how I understand it Share this post Link to post Share on other sites
casperk 0 Posted October 1, 2017 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. Share this post Link to post Share on other sites
