$ sudo update-grub

$ sudo os-prober
sudo: os-prober: command not found


$ blkid -o list
/dev/sda1  ntfs    System Reserved (not mounted)     10CE91E6CE91C3FE
/dev/sda2  ext4                    /                 96c436a1-3a18-4d1e-b774-75e681accd2d
/dev/sda3  ntfs    C               /media/mohsen/C1  FCEA94CEEA948714
/dev/sda4  ntfs                    /media/mohsen/    0AE389FE4A849CE3 0AE389FE4A849CE3