Hi John,
Thanks for getting back to me.
This is the result:
r:~# apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages will be REMOVED:
systemd
0 upgraded, 0 newly installed, 1 to remove and 2 not upgraded.
After this operation, 12.2 MB disk space will be freed.
Do you want to continue? [Y/n]
If I say Yes,
Do you want to continue? [Y/n] y
(Reading database ... 96191 files and directories currently installed.)
Removing systemd (215-17+deb8u12) ...
systemd is the active init system, please switch to another before removing systemd.
dpkg: error processing package systemd (--remove):
subprocess installed pre-removal script returned error exit status 1
Failed to stop lib-init-rw.mount: Unit lib-init-rw.mount not loaded.
addgroup: The group `systemd-journal' already exists as a system group. Exiting.
Errors were encountered while processing:
systemd
E: Sub-process /usr/bin/dpkg returned an error code (1)
Which is understandable I guess but I've not found how to fix.
Cheers,
Richard.