[Bug 1024383] Re: update-grub generates only BIOS based menu entries for Windows, even on UEFI systems

[Cavsfan]

I have a new PC SSD using UEFI/GPT and I am experiencing none of these problems booting Windows 10.
I installed Windows 10, then Xubuntu 16.04, Xubuntu 18.04 and today Xubuntu 18.10 with zero problems.
Boot entry for Windows 10 default:
menuentry 'Windows Boot Manager (on /dev/sdc1)' --class windows --class os $menuentry_id_option 'osprober-efi-688D-126B' {
	insmod part_gpt
	insmod fat
	set root='hd2,gpt1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd2,gpt1 --hint-efi=hd2,gpt1 --hint-baremetal=ahci2,gpt1  688D-126B
	else
	  search --no-floppy --fs-uuid --set=root 688D-126B
	fi
	chainloader /EFI/Microsoft/Boot/bootmgfw.efi
}

It does not fail to boot Windows 10.

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https://bugs.launchpad.net/bugs/1024383

Title:
  update-grub generates only BIOS based menu entries for Windows, even
  on UEFI systems

Status in grub2 package in Ubuntu:
  Confirmed
Status in os-prober package in Ubuntu:
  Confirmed
Status in grub2 package in Debian:
  Fix Released

Bug description:
  64bits computer with pre-installed EFI Windows 7. (remark: same bug if
  Windows8)

  Installed Ubuntu 64bits in dual-boot. GRUB (grub-efi) is correctly
  installed and allows to boot Ubuntu, but it does not allow to boot
  Windows.

  Its menu shows 2 INVALID Windows entries. When selecting these
  entries, it displays "Invalid EFI file path" error, and returns to
  GRUB menu.

  It appears that GRUB creates BIOS/mbr entries when it should be
  UEFI/gpt type entries.

  *********************** WORKAROUND **************************

  either boot Windows from the (EFI) BIOS menu, or add valid Windows entries via Boot-Repair.
  ***************************************************************

  (original thread in French: http://forum.ubuntu-
  fr.org/viewtopic.php?pid=10010231#p10010231 )

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