Cara update GRUB di Ubuntu 20.04

Karena aku install windows 7 di ssd yang berbeda kemudian aku ingin windows 7 akan muncul di grub Ubuntu, maka aku menjalankan perintah :

~$ sudo update-grub
[sudo] password for …:
Sourcing file /etc/default/grub' Sourcing file/etc/default/grub.d/init-select.cfg’
Generating grub configuration file …
Found linux image: /boot/vmlinuz-5.4.0-77-generic
Found initrd image: /boot/initrd.img-5.4.0-77-generic
Found linux image: /boot/vmlinuz-5.4.0-74-generic
Found initrd image: /boot/initrd.img-5.4.0-74-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
Found Windows 7 on /dev/sdc1
done

Windows 7 ditemukan dan sudah ditambahkan pada Grub