Laptops and desktops with Windows 10 Pro version come with BitLocker encryption enabled by default.
This makes the dual booting procedure a tad bit different than the usual procedure.
In here, you have to disable BitLocker encryption first and then start the dual boot process. After completing the dual boot, you re-enable the BitLocker encryption.
The important thing here is that you have to make a back up of your BitLocker recovery key. This is super important.
This video shows all these steps in details.
Links mentioned in the video:
- Rufus website for making the bootable Ubuntu USB: https://rufus.ie/
- Direct download link for Ubuntu: https://ubuntu.com/download/desktop
- Torrent download link for Ubuntu: https://ubuntu.com/download/alternative-downloads
- Microsoft account for recovery key: https://account.microsoft.com/devices/recoverykey?refd=support.microsoft.com
Text version of this video is available here: https://itsfoss.com/dual-boot-ubuntu-windows-bitlocker/