If you do not run this command, while installing EndeavourOS or any Linux distribution that uses Calamares on an LVM-on-LUKS volume, the installation will fail.[1]
Leave
# while true; do vgchange -aay; done
Running in the terminal before the installation.
This is not an EndeavourOS problem, it’s Calamares.[1]
References
- https://github.com/calamares/calamares/issues/1564 - Calamares closes LUKS and/or LVM device before trying to install to it