Cfrtjryk

I'm trying to dual boot with fedora 20 and windows 8.
I install first windows and then fedora. And grub detects windows automatically.

So the default etcgrub.d30_os-prober for windows is this:

case ${BOOT} in chain)



onstr="$(gettext_printf "(on %s)" "${DEVICE}")"

cat << EOF

  menuentry '$(echo "${LONGNAME} $onstr" | grub_quote)' --class windows --class os $menuentry_id_option 'osprober-chain-$(grub_get_device_id "${DEVICE}")' {

EOF

  save_default_entry | grub_add_tab

  prepare_grub_to_access_device ${DEVICE} | grub_add_tab



  case ${LONGNAME} in

    Windows Vista*|Windows 7*|Windows Server 2008*)

    ;;

    *)

    cat << EOF

      drivemap -s (hd0) ${root}

    EOF

    ;;

  esac



  cat <<EOF

  chainloader +1

}

This creates this menuentry which doesn't boot windows:

What I've tried

I created in my /etc/grub.d/40_custom manually a menuentry which works fine

menuentry "Windows" {

  insmod part_gpt

  insmod fat

  insmod search_fs_uuid

  insmod chain

  search --fs-uuid --no-floppy --set=root your_UUID

  chainloader (${root})/efi/Microsoft/Boot/bootmgfw.efi

}

So I try to adapt this for the etcgrub.d30_os-prober and add replace the last part with this:

cat <<EOF

  search --fs-uuid --no-floppy --set=root $(grub_get_device_id "${DEVICE}")

  chainloader (${root})/efi/Microsoft/Boot/bootmgfw.efi

}

EOF

but this creates:

menuentry 'Windows Boot Manager' {

      chainloader /EFI/Microsoft/Boot/bootmgfw.efi

      boot

}

Which doesn't work.

My question

How should I change 30_os-prober so that it creates a working grub menuentry?

I am not that well versed with the Fedora and its Grub2. But i will share a solution i adopted in my dual-boot system with Ubuntu and Windows XP Professional
Edit grub.cfg with vim or any other editor

vim /boot/grub/grub.cfg 

To:

 121 ### BEGIN /etc/grub.d/30_os-prober ###

    122 menuentry "Microsoft Windows XP Professional (on /dev/sda1)" --class windows --class os {

    123     insmod part_msdos

    124     insmod ntfs

    125     set root='(/dev/sda,msdos1)'

    126     search --no-floppy --fs-uuid --set=root AC60CA8160CA522E

    127     drivemap -s (hd0) ${root}

    128     chainloader +1

    129 }

as the Ubuntu grub default adds this Windows as the last entry. I just added this entry in front of all other menu entries.

Try this :-

menuentry "WINDOWS"{
set root='(hd0,msdos1)'
chainloader +1
}

Change the partition number , where your windows is installed.
hd0 :- means first disk
msdos1 :- means first partition.