On PC HDD I have a partition for the system. The system maintenance doesn't allow to diminish the partition under 180 G in spite of the fact, that the date amount is only 58 G. The fragmentation is reported 0%. Where can be the problem?
It all depends on the positioning of the files. The position of the physically last file in the partition will determine the minimum size of that partition. Perhaps a defragment of the partition will move the offending file(s) closer to the start of the partition and allow you to reclaim additional space.
Use MiniTool Partition Wizard, it will move the files for you:
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