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dual-boot
partitioning
gparted
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URL:
https://askubuntu.com/q/1030518
Title:
Can I safely resize Windows 10 system partition from Ubuntu?
ID:
/2018/05/01/Can-I-safely-resize-Windows-10-system-partition-from-Ubuntu_
Created:
May 1, 2018
Edited: May 1, 2018
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April 8, 2024
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The safest way is to use Windows 10 to shrink it’s own partition.
Windows 10 knows more about the last used area of the disk partition. Ubuntu / gparted cannot shrink the partition reliably as Windows 10 can.
For example last weekend I wanted to clone 16.04 and do a test run upgrade to 18.04. My Windows partition was 411 GB with only 100 GB used. Windows 10 would only shrink by a maximum of 25 GB because it saw used files near the end of the partition. If any more was needed Windows 10 would have to defragment the disk.