How to install Ubuntu (24.04.02 LTS) on Alienware M16 2R (Dual Boot)

Before this, you need a flash drive that has Ubuntu installed.

Here's the step to install.

1. Shrink volume on Windows (the volume size is up to you.)
2. Open CMD as an admin on Windows.
3. Type bcdedit /set default safeboot minimal ← After this, you will be in the minimal safemode.
   *The minimal safemode does not allow you to use wifi.
4. Reboot the PC and go to the BIOS (F2).
5. Uncheck Secure Boot (Boot Setting).
6. Switch to ACHI from RAID On (Storage).
7. Reboot PC (PIN login method does NOT work anymore.)
   Do not get panicked. I got your back. =)
8. "Shit" Key + "Restart" the PC.
9. In Recovery Mode:
   Go to "Troubleshoot" → "Advanced Options" → "Command Prompt".
10. Type bcdedit /deletevalue {default} safeboot on CMD. (This means exit safemode.)
11. Close CMD
12. Click "Continue".
13. Ensure that you can log in on Windows. ← You might need to set up your PIN again.
14. Insert the flash drive into the PC.
15. Restart the PC and enter BIOS (F2).
16. Change the boot order: USB → Windows → Whatever
17. Exit BIOS and follow the install steps.
18. Restart the PC.

Done.