So... Thank you all for your suggestions.

The thing is... It seems that I have to reflash it...
Linking and flashing kernel only simply does not work I do not know why.
It is not possible to mount these partitions ("No such file or directory") and Windows cannot so MyDocs and /home/opt with rescueOS mass storage mode - thank god I have a linux live cd (it sees these partitions) so at least I can save data.

Backupmenu simply does not work in this situation because it seeks for the kernel modules and cannot find those. The last backup I made is too old... (Yes I know I had to make a backup before this, but... I never learn... )

Thank you so much,

jm