man pvremove (Administration système) - remove a physical volume
NAME
pvremove - remove a physical volume
SYNOPSIS
pvremove [-d|--debug] [-f[f]|--force [--force]] [-h|--help] [-t|--test] [-v[v]|--verbose [--verbose]] [-y|--yes] PhysicalVolume [PhysicalVolume...]
DESCRIPTION
pvremove wipes the label on a device so that LVM will no longer recognise it as a physical volume.
OPTIONS
See lvm for common options.