PostInstall GRUB problem with other installations! [Solved]

[neogeo]

Hello.
I have 3 SSDs on my computer. 1 for Windows, 1 for Linux and one for various applications.
When I install MX KDE on a Linux SSD and on a first boot, GRUB doesn't see the Windows 11 installation. No matter what I do, GRUB doesn't see it.

Here is a simple REMEDY for that:

As 1st, mount win11 or other win ssd and do a console command 'sudo update-grub' (as 2nd). After that your Windows installation will be visible and displayed in GRUB.
Finally, install GRUB Customizer to rename and rearrange the GRUB boot options.
That is all.

ENJOY!