BitLocker drive encryption is mainly accessible in specific Windows editions like Windows 10 Pro, Enterprise, and Edu, but absent in Windows 11/10/8/7 Home and Windows 7 Pro. M3 BitLocker Loader for Windows acts as a disk encryption utility to overcome this limitation, letting users secure their hard drives, external hard drives, USB flash drives, SD cards, etc. with BitLocker on these Windows editions.
Official overview page: https://www.m3datarecovery.com/bitlocker-windows-home/