On the OS xubuntu-18.04.3-desktop-amd64, I solved the problem.
After copying the old EFI to the outcrops of the GRUB, through a live disk.
In device /dev/sda1 EFI System
The operating system has worked as it should.
On the OS ubuntu-18.04.3-live-server-amd64, I have not tried it yet.
This Saturday I will report new data on this issue.
Hello!
No error.
On the OS xubuntu- 18.04.3- desktop- amd64, I solved the problem.
After copying the old EFI to the outcrops of the GRUB, through a live disk.
In device /dev/sda1 EFI System
The operating system has worked as it should.
On the OS ubuntu- 18.04.3- live-server- amd64, I have not tried it yet.
This Saturday I will report new data on this issue.