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Compacting Linux VHDX with Hyper-V

I wasn’t able to reduce the file size of my Linux disks on Hyper-V through the build in compact function of Hyper-V

In order to compact your disk run the following command on the Linux install

sudo fstrim -v

Shutdown your Linux install

Compact your disk

Credit: https://helgeklein.com/blog/2016/11/faster-trimming-compacting-hyper-v-ubuntu-vms/