If anyone else is still dealing with this problem, here’s how to remove the ghost space:
-
Locate the
ext4.vhdx
file and note its absolute path. (should beLocalAppData%\Packages\
under a subfolder specific to the distribution. For my Ubuntu install, the folder wasCanonicalGroupLimited.Ubuntu20.04LTS_79rhkp1fndgsc
. Once in that folder, openLocalState
and you’ll find your VHDX file.) -
Follow the instructions provided in this comment: https://github.com/microsoft/WSL/issues/4699#issuecomment-627133168.