@Cumbie, Keith,Thanks for posting in Q&A.
From your description, I know you want to know how BitLocker can affect when installing dual boot windows with Linux.
Based on my research, to dual boot Windows (with BitLocker enabled) and Linux, you need to disable BitLocker encryption before starting the dual boot process and re-enable it after installing Linux, or it will fail the dual boot.
Here are two links about how to Dual Booting Ubuntu with Windows with BitLocker Encryption
https://itsfoss.com/dual-boot-ubuntu-windows-bitlocker/
https://www.mikekasberg.com/blog/2020/04/08/dual-boot-ubuntu-and-windows-with-encryption.html
Non-official, just for reference.
Hope it will help.
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