I just installed Windows 10 + Ubuntu on my Lenovo laptop. Windows is installed on SSD and Ubuntu is installed on HDD. sda1 is Windows recovery and sda2 is Windows 10. Ubuntu is installed on sdb. Bootloader was installed in sda.
My problem is that GRUB2 shows only win recovery on sda1. I already tried updating grub and running os-prober as was suggested in other asks (where Windows was not found at all), but it only finds sda1. I read somewhere that it may be Lenovo's fault, but I'm not sure about it.
Can I fix it any other way than manually adding Windows 10 to grub files? Various threads says that for Windows 8.1 and 10 that can be buggy to add them manually.