From the pictures you provided, it seems that you have already installed Ubuntu on your system, but it is not showing up in the Windows Dual Boot Manager. To add Ubuntu to the Windows Dual Boot Manager, you can try the following steps:
Step 1: Disable Secure Boot (UEFI mode)
Firstly, make sure that Secure Boot is disabled in your computer's BIOS or UEFI settings. This is necessary because Secure Boot can prevent non-Windows operating systems from being added to the boot manager. Look for an option named "Secure Boot" or "UEFI Boot" in your BIOS/UEFI settings and disable it.
Step 2: Boot into Ubuntu and Run Boot Repair
1. Insert or connect the Ubuntu installation media (DVD or USB) to your computer and restart it. Make sure to boot from the Ubuntu installation media.
2. Once Ubuntu starts, select the "Try Ubuntu without installing" option.
3. Open a terminal by pressing Ctrl+Alt+T.
4. In the terminal, run the following command to install the Boot Repair tool:
```
sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install boot-repair
```
5. After the installation, launch Boot Repair by running the following command:
```
boot-repair
```
6. Follow the instructions provided by the Boot Repair tool. It will automatically scan your system for installed operating systems and try to fix any boot-related issues.
Step 3: Update the Windows Dual Boot Manager
After running Boot Repair, restart your computer and check if Ubuntu is now appearing in the Windows Dual Boot Manager. If not, you can try updating the boot manager manually:
1. Boot into Windows and open a Command Prompt as an administrator.
2. Run the following command to open the boot manager configuration:
```
bcdedit
```
3. Locate the Windows Boot Manager entry and note down its identifier. It should be something like `{bootmgr}`.
4. Run the following command to add Ubuntu to the boot manager:
```
bcdedit /set {bootmgr} path \EFI\ubuntu\shimx64.efi
```
5. Restart your computer and check if Ubuntu is now listed in the Windows Dual Boot Manager.
If Ubuntu still doesn't appear in the Windows Dual Boot Manager after following these steps, it is possible that there may be some compatibility issues between Ubuntu and your system. In that case, you may need to consult Ubuntu forums or support for further assistance.
