belkone/Proxmox: Fix Grub UEFI+LVM+RAID1(mdadm).md

## Proxmox: Fix Grub UEFI+LVM+RAID1(mdadm).md

      
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              Proxmox: Fix Grub UEFI+LVM+RAID1(mdadm).md
            
          
    Proxmox: Fix Grub UEFI+LVM+RAID1(mdadm)

make backup of your grub first!

apt-get install --reinstall grub-efi-amd64
umount /boot/efi
mount /dev/sda2 /boot/efi
rm -r /boot/efi/*
grub-install --target x86_64-efi --efi-directory /boot/efi --recheck /dev/sda
umount /boot/efi
mount /dev/sdb2 /boot/efi
rm -r /boot/efi/*
grub-install --target x86_64-efi --efi-directory /boot/efi --recheck /dev/sdb
dpkg-reconfigure grub-efi-amd64
update-grub
update-initramfs -u

you can safely answer 'NO' to all questions during grub-install