Your EFI system partition is corrupt; you will need to repair it with either dosfsck or Windows' chkdsk/scandisk.
** Changed in: grub-installer (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1705892 Title: want to install ubuntu on my laptop beside my windows but the installation always has a fatal error with the grub-installer. using usb drive to install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1705892/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs