$ 0 0 check solution 2:http://community.acer.com/t5/E-F-and-M-Series-Laptops/Re-Dual-boot-issue-in-Acer-E5-573G-with-Kali-Linux-2016-2/m-p/493786#M15807 you need to load Ubuntu EFI under Select an UEFI file as trusted for executing: