Comment # 6 on bug 1024196 from Malcolm Lewis

Hi
Unfortunately no success here... still shows only Windows;

os-prober 
rmdir: failed to remove '/var/lib/os-prober/mount': No such file or directory
rmdir: failed to remove '/var/lib/os-prober/mount': No such file or directory
/dev/sdb2@/EFI/Microsoft/Boot/bootmgfw.efi:Windows Boot Manager:Windows:efi

I wonder if the rmdir is the issue for me...?