If want to disable automatic BitLocker Device Encryption during installation on Windows 11, follow the instructions mentioned in this post.

Although Bitlocker and VHD are standard Windows tools, you’ll need Windows 11 Pro to encrypt the drive, so make sure you’ve got the right version.

Many corporate clients use BitLocker to secure their PC fleets, Lambertz noted, and the encryption technology is now being enabled by default on newer Windows 11 installations.