It's been more than a month that I installed Ubuntu 20.04 on a desktop along side with windows (Probably 10 or 11) that was already on the desktop. Now I noticed that the computer boot directly into Ubuntu I checked again and Windows is not appearing in the boot menu. I don't know what happened or how to fix that. I tried some commands that I found in the internet like
sudo f-disk -l and it displayed that:
. . . Device Start End Sectors Size Type /dev/sda1 2048 264191 262144 128M Microsoft reserved /dev/sda2 264192 1795461119 1795196928 856G Microsoft basic data /dev/sda3 3590658048 3591708671 1050624 513M EFI System /dev/sda4 3591708672 3907028991 315320320 150.4G Linux filesystem /dev/sda5 1795461120 3590658047 1795196928 856G Linux filesystem . . .
sudo os-prober is not showing anything
How can I fix this issue please?