My mamma says "if you don't have something to contribute, keep your mouth shut."
If that was directed at me then I suggest you have a think twice about what you really want out of your life. It certainly isn't help.
I searched, found less than helpful information, posted and was pointed to the less than helpful information, had my post mutilated, then finally got help.
The information is pretty accurate. PEBKC. Adding a repo doesn't really get a lot simpler. Do you want us to do the copy and paste for you?
Now I need to know how to undo the less than helpful information.
...... you made the mess. Perhaps you ought to look at what you did to add Sernet, which has noting to do with the stephdl repo.
Others likely need the same thing, not hints and a lecture.
Others don't start off cursing and blaming others for their own failings or lack of knowledge. I'm not about to start doing your dirty work when you are abusing me.
Sorry if I'm abrasive sometimes but I don't think acting like this is a "club" where some insiders know the tricks and others don't is helpful. SME is hardly a standard distribution and if it is to succeed it need as many users as possible.
Don't apologise. Just don't be abusive. Simples.
It's not a 'club'. We are all volunteers. We were all NOOBS once. And we ALL had to go read and understand. You will help yourself a lot and get more assistance if you could be bothered to do the same.
If you have criticisms then make them politely and fairly, and after you have done some research. As we say frequently... use a TEST machine. Never use a real one until you know what you are doing.
You mention about backup "The built in one does not handle enough data" Where did you get that notion ? What have you done to test before making sweeping assumptions??
If you can start by being polite, explain EXACTLY what you have done, and what you might have tried to remedy the situation, you may get some help.
But if you are going to continue this way then you are going to listen to nothing but the sound of silence.