If running on a VM and you have guestfish installed, you can make the link using it. Close the VM down
sudo guestfish --rw -a disk.img run mount /dev/sda1 / ln-sf /proc/self/mounts /etc/mtab exit
Then re-start the VM. Do note that the command is 'ln-sf' and not 'ln -sf'... that had me scratching my head for a while!
If running on a VM and you have guestfish installed, you can make the link using it. Close the VM down
sudo guestfish --rw -a disk.img
run
mount /dev/sda1 /
ln-sf /proc/self/mounts /etc/mtab
exit
Then re-start the VM. Do note that the command is 'ln-sf' and not 'ln -sf'... that had me scratching my head for a while!