Hi Sivan.
Thank you very much for the time you have taken to explain all this to me and in such detail.

I have downloaded the iso that you indicated again, I have used a new USB key, I have done the MD5 addition and again the same errors.

But... It occurred to me to put that "pendrive" directly into one of the front ports of the PC and... IT HAS WORKED.
I have already been able to see the splendid work you have done.

I have a couple of questions before installing it, if you would be so kind.

1st - I have read that it uses rmp and the apt system similar to debian. But in the "live system" that parameter is not there. I prefer the terminal to install programs.
2nd - Do you use a software store other than discovery? Type of gnome or similar?

Thank you very much Silvan for the help.

Hi,
I'm very happy that you managed to solve the problem and appreciated openmamba in its live execution.

Here are the replies to your questions:

1) openmamba uses rpm packages and the low-level install/update manager is dnf. Both have been for years maintained as distribution indipendent projects and are used in Fedora and other distros. I know that there are sources reporting that it uses apt but this has changed over a decade ago 🙂

2) the recommended desktop experience with openmamba is with Plasma 6 desktop which offers discover to install and update packages. For the LXQt lightweight desktop alternative I've provided dnfdragora.