don't know how to explain but i can send the screen shot of the repoted error by grub customizer

[Angelo Morsiquillo]

/home/vicks/Desktop/Screenshot at 2019-07-05 15-43-17.png

[Angelo Morsiquillo (avon2)]

After adding the android PrimeOS to my computer, it did not see my other linux OS, it is the only one in the Boot Menu. So, I reinstalled my other Linux OS but it did not also include PrimeOS in the boot Menu, so I reinstalled back again PrimeOS and again, it is the only one in the boot menu. It would be an endless installing and re-installing of each other. Both android PrimeOS and Linux OS does not see each other, how can they be able to see each other? I tried to use the solutions from the forums of gediting /etc/grub.d/40_custom, but they all didnt work until I came to know Grub Customizer which after trying to use it, it only committed a bug error that I do not understand, can you pls. explain.