I have not read the spec but saw this: UEFI 2.3 -it is permitted for the firmware to treat the EFI system partition in the same way as removable media or use bootx64.efi http://mjg59.dreamwidth.org/4125.html
And many UEFI implementations, all of HP & Sony that I have seen in Ubuntu forums will only boot "Windows" and usually copying grubx64.efi is one work around that then lets users boot. Real solution is that vendors do not violate UEFI spec. Vendors violated UEFI specs - http://hwe.ubuntu.com/docs/ubuntu-bios-uefi-requirements.pdf [quote]Firmware should not enforce any boot policy other than the mechanism specified in Section 3 of the UEFI 2.3.1 specification [UEFI 2.3.1]. Specifically, firmware should not modify boot behaviour de- pending on the Description field of the EFI_LOAD_OPTION descriptor.[/quote] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1366546 Title: Ubuntu doesn't provide \EFI\BOOT\BOOTX64.EFI for UEFI systems To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1366546/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
