Where is the Windows bash directory in Windows?
Solution 1:
I believe this link will answer your question:
https://askubuntu.com/questions/759880/where-is-the-ubuntu-file-system-root-directory-in-windows-nt-subsystem-and-vice
In short:
%localappdata%\Lxss\rootfs
or
C:\Users\Username\AppData\Local\Lxss\rootfs
Solution 2:
The folder changed again:
%localappdata%\Packages\CanonicalGroupLimited.UbuntuonWindows_79rhkp1fndgsc\LocalState\rootfs
C:\Users\{Username}\AppData\Local\Packages\CanonicalGroupLimited.UbuntuonWindows_79rhkp1fndgsc\LocalState\rootfs