[Bug 2078307] Re: Grub 2.12 in Oracular is unable to boot Windows using chainloader

[haobinnan]

grub.cfg
{
set timeout=30

loadfont unicode

set menu_color_normal=white/black
set menu_color_highlight=black/light-gray

menuentry "Try or Install Ubuntu" {
	set gfxpayload=keep
	linux	/casper/vmlinuz  --- quiet splash
	initrd	/casper/initrd
}
menuentry "Ubuntu (safe graphics)" {
	set gfxpayload=keep
	linux	/casper/vmlinuz nomodeset  --- quiet splash
	initrd	/casper/initrd
}
menuentry "windows" {
	set gfxpayload=keep
	chainloader /efi/Microsoft/Boot/bootmgfwceshi.efi
}
grub_platform
if [ "$grub_platform" = "efi" ]; then
menuentry 'Boot from next volume' {
	exit 1
}
menuentry 'UEFI Firmware Settings' {
	fwsetup
}
else
menuentry 'Test memory' {
	linux16 /boot/memtest86+x64.bin
}
fi

}

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https://bugs.launchpad.net/bugs/2078307

Title:
  Grub 2.12 in Oracular is unable to boot Windows using chainloader

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  I am using Shim 15.8 in combination with GRUB2.12. One of the GRUB
  menu items, chainloader /efi/Microsoft/Boot/bootmgfw.efi, fails to
  boot, while it works correctly with GRUB2.06. Below is a screenshot of
  the error.

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