Your EFI system partition is corrupt. You will need to repair it either using dosfsck from linux, or chkdsk/scandisk from Windows.
** 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/1407139 Title: xubunt install abort due to grub fail to install on my brand new laptop acer AspireE 15 E5-521G-47TB To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1407139/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs