The problem is that there is not TAB in my keyboard. Today i spend hrs trying again to install the system, every time the windows appear the whole information was not completed at the bottom of the windows, then, after many times trying different ... for intuition i was moved to press the key ESC and ... BINGO!

-- The system is already installed again, this time i didn't do this in Italian but in English, when locales appears, i just changed it from en to spanish and now the system is in spanish. No more grub problems, everything is fine.

Only one last question. I'm going to install MXLinux later but want the Devuan Grub, after this second installation, mxlinux will take the grub. If i change again to Devuan Grub ... is it there any risk in loosing everything like it happened before?.

Thanks!

After dpkg -i /grub-pc* a windows opened  ... i pressed many times OK and «nothing happened» ... i allways have problems with graphics in this PC.

When you get to that window that won't let you do anything, press TAB and it will highlight the 'OK'. Then you can press Enter and it will bring you to the next screen.

Use TAB or arrow keys to navigate in debconf screens like that one.
Use Space Bar to select or unselect items.

I forgot to said that i tried to recover the grub from partedmagic with the application named grub-doctor but is not possible, i tried cup of things more update grub etc nothing ...

root@kaos:/home/keos# LANG=C DEBIAN_FRONTEND=readline dpkg --configure -a
Setting up grub-pc (2.02~beta3-5) ...
Configuring grub-pc
-------------------

The grub-pc package is being upgraded. This menu allows you to select which 
devices you'd like grub-install to be automatically run for, if any.

Running grub-install automatically is recommended in most situations, to prevent
the installed GRUB core image from getting out of sync with GRUB modules or 
grub.cfg.

If you're unsure which drive is designated as boot drive by your BIOS, it is 
often a good idea to install GRUB to all of them.

Note: it is possible to install GRUB to partition boot records as well, and some
appropriate partitions are offered here. However, this forces GRUB to use the 
blocklist mechanism, which makes it less reliable, and therefore is not 
recommended.

 1. /dev/sda (640135 MB; TOSHIBA_MQ01ABD064)  2. - /dev/sda5 (100965 MB; /)

(Enter the items you want to select, separated by spaces.)

GRUB install devices:

You chose not to install GRUB to any devices. If you continue, the boot loader 
may not be properly configured, and when this computer next starts up it will 
use whatever was previously in the boot sector. If there is an earlier version 
of GRUB 2 in the boot sector, it may be unable to load modules or handle the 
current configuration file.

If you are already using a different boot loader and want to carry on doing so, 
or if this is a special environment where you do not need a boot loader, then 
you should continue anyway. Otherwise, you should install GRUB somewhere.

Continue without installing GRUB? [yes/no] y

Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.9.0-6-amd64
Found initrd image: /boot/initrd.img-4.9.0-6-amd64
Found MX 17 Horizon (17) on /dev/sda1
Found Devuan GNU/Linux ascii/ceres on /dev/sda3
done
Processing triggers for man-db (2.7.6.1-2) ...
root@kaos:/home/keos# up-get update
bash: up-get: no se encontró la orden
root@kaos:/home/keos# apt-get update
Des:1 http://pkgmaster.devuan.org/merged ascii InRelease [22.2 kB]     
Ign:2 http://kovacsoltvideo.hu/moonchildproductions ./ InRelease
Obj:3 http://kovacsoltvideo.hu/moonchildproductions ./ Release                 
Des:4 http://pkgmaster.devuan.org/merged ascii-updates InRelease [22.2 kB]     
Des:5 http://pkgmaster.devuan.org/merged ascii-security InRelease [21.6 kB]
Descargados 66.0 kB en 5s (12.5 kB/s)                          
Leyendo lista de paquetes... Hecho
root@kaos:/home/keos# apt-get upgrade
Leyendo lista de paquetes... Hecho
Creando árbol de dependencias       
Leyendo la información de estado... Hecho
Calculando la actualización... Hecho
0 actualizados, 0 nuevos se instalarán, 0 para eliminar y 0 no actualizados.
root@kaos:/home/keos#

And after reboot the system ...

root@kaos:/home/keos# apt-get update
Ign:1 http://kovacsoltvideo.hu/moonchildproductions ./ InRelease               
Obj:2 http://pkgmaster.devuan.org/merged ascii InRelease
Obj:3 http://pkgmaster.devuan.org/merged ascii-updates InRelease               
Obj:4 http://pkgmaster.devuan.org/merged ascii-security InRelease              
Obj:5 http://kovacsoltvideo.hu/moonchildproductions ./ Release
Leyendo lista de paquetes... Hecho
root@kaos:/home/keos# apt-get upgrade
Leyendo lista de paquetes... Hecho
Creando árbol de dependencias       
Leyendo la información de estado... Hecho
Calculando la actualización... Hecho
0 actualizados, 0 nuevos se instalarán, 0 para eliminar y 0 no actualizados.
root@kaos:/home/keos#

Thanks again to all of you!!.

DEBIAN_FRONTEND=readline dpkg --configure -a

This should force readline to be used instead of dialog for the configuration questions which might give you a possibility to actually select something.

- increase your screen resolution so that hopefully all of the box shows up
- blindly answer the box's question (since you can't see all of the box)
- try the dpkg command in a different terminal emulator or in a virtual console, hoping all of the box shows up

Good luck. I'll keep an eye on the thread and will jump in again if I think I can help.

I agree that dpkg is being a bully here. However, in a Debian/Devuan system dpkg is king of the hill, so we need to satisfy it.

is it any way in which i can avoid this graphic at the terminal, another command diferent that sudo dpkg --configure -a or change someting at grub configuration?

I don't know what to do, i'm manipulated by this troubleshooting ...

I don't know enough about ncurses (the library used to create these kind of text boxes inside terminals) to help the box show up properly. I'd try one of two things:

1. Try running $ sudo dpkg --configure -a in a different terminal emulator or in a virtual console (e.g., after pressing Control + Alt + F2). Hopefully the box will display properly in a different environment.

-or-

2. In whatever terminal emulator you are using, when the box shows up try blindly choosing a location for grub using your keyboard arrows. After dpkg installs grub to somewhere (since you couldn't see), you can manually install grub to /dev/sda to make sure it is installed to the proper location.