RN104 Stuck on booting 99% mysql.service

Hello.
I will use google translate in this case.

In connection with moving, my Netgear readynas 104 was shut down via power outage (Most likely) because I wasn't there when it was moved.

Now I'm in place in the new apartment, and when I try to start the device, it gets stuck at 99% mysql.service (And then it stays forever, I tried to start it yesterday during the day, and then went to work, and now 30 hours later, the display shows the same thing.)

Now I wonder if there is any rescue for it? (And that I get to keep all my data on my 4 disks)

I can use ssh to get into my nas, but then I can't do much more due to too little knowledge about ssh commands.

So if anyone knows any useful commands I can use to fix the problem?

And a question: Does the nas itself use mysql?

Because if it doesn't use it, then with your help I could remove that whole process to see if that helps, because the only thing that uses mysql is Kodi, and I can easily put that back in afterwards when the problem is fixed.

I don't use mysql for anything else that I know of.

If it is not possible to do anything via ssh, do I have options to mount the disks in a computer with ubuntu live if necessary?

But need some guidance how to proceed to get my nas to boot completely again.

Thanks