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I found this : How can I replace upstart with systemd?

but I would like the other way around.

The reason is that I spend quite a time learning the basic init process and I am pretty much accustomed to the "service" commands. I really dont care about 10 - 20 millisecond or even 1 -2 seconds of late boot up. I just need some clarity in the init process and want to stick to the old system..

Is it possible to do this at the boot time using grub maybe, which blacklists systemd and just runs the 14.04 init routines ( I guess it was a mix of upstart and sysvinit )?

I found something, but dont know how to proceed further:

In the /etc/grub.d/10_linux, I find an entry with

SUPPORTED_INITS="sysvinit:/lib/sysvinit/init systemd:/lib/systemd/systemd upstart:/sbin/upstart"$
infoclogged
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1 Answers1

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The ability to continue to run Upstart should be considered temporary. Over time (or already?) some projects which will quit providing Upstart init scripts, so your transition to systemd will happen eventually if you stick with Ubuntu.

However, the service command continues to work with systemd on Ubuntu 16.04 and beyond as it did before with Upstart. I expect this command will exist for a while.

If your primary concern is being able to use the service command, there is no need to switch back to Upstart for that.

Mark Stosberg
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