While ago, I decided to dedicate a separate hard-disk to the $HOME directory during the installation of Debian. Recently, after the complete removal of Windows from my PC, and deletion of the associated partition, I found enough space to mount $Home along with the root on the main NVME disk. What I needed to do was to First, open a terminal and login as the root system administrator:
su
Password: ***
The next step was to logout from the current user, take a copy and unmount $HOME partition:
init 1
mkdir temp_home
cp -r /home/* /temp_home
umount -fl /home
Now, it was time to change the name of the temporary directory:
mv /temp_home /home
By commenting out the corresponding line in the file system table "/etc/fstab", the system would forget about the other partition with the mounting point of $HOME. Saving fstab, it is needed to reload daemons:
systemctl daemon-reload
The last step was to override the ownership of the /home directore:
chown -R user /home/*