Try some Free Partition Magic alernative such as, easeus, gparted, cute and so on.
Some software will help you to resize the partition, such as easeus partition manager, gparted and so on.
Increase Windows Server system partition without reinstall
It is too easy to solve this problem, if your do not need the partition that Windows...
free backup software
some free backup software may slove your problem even though they donot allow you to choose files directly but can manage...
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