md5sum /etc/fstab might be viable too, for GPT systems that contain randomised volume IDs (don't think mine's changed since install). Although then there's a c

md5sum /etc/fstab might be viable too, for GPT systems that contain randomised volume IDs (don't think mine's changed since install). Although then there's a chance it could persist between installs if someone decides to re-use their existing partitions, which would be creepy.