backup file: grub: /etc/grub.d/40_custom (Modification time mismatch) backup file: grub: /etc/grub.d/40_custom (Size mismatch) backup file: grub: /etc/grub.d/40_custom (MD5 checksum mismatch) backup file: grub: /etc/grub.d/40_custom (SHA256 checksum mismatch) grub: 1116 total files, 2 altered files