If you see This PC doesn't support entering a BitLocker recovery password during startup, enable WinRE, tweak Group Policy, ...

The first is to enter a recovery password. This password, anywhere between 8 to 256 characters long, must be set in advance, so you'll have to find where you jotted it down manually or electronically.

This recovery key is a unique 48-digit numerical password that works as a backup unlock method when BitLocker cannot verify your identity through normal login. Think of it as a master key to your ...

To Unlock the Data Drive with BitLocker Password, do the following- ... Look for the 48-digit recovery key for this drive that matches its key ID (e.g., “BED9A0F3”).

The second and most common way to bypass the BitLocker Recovery screen is using a recovery key. This key is 48 digits long and can be found in whichever source you used to activate BitLocker.