I just installed Debian 10 from disk. Whenever I shutdown, I get a single message displayed on screen, "Failed to unmount /usr/". What can I do to correct this? Is this error likely causing damage to the drive or data in /usr?
I have separate partitions for /boot (ext2), /usr/ (ext4), /var/ (ext4), /usr/local/ (ext4), /tmp/ (ext2), and /home (ext4).