If you have the recovery key, this WinPE build includes full BitLocker driver support. Boot into the environment, unlock the drive via the command line ( manage-bde -unlock E: -RecoveryPassword [key] ), and then run Partition Wizard.
loaded—a lightweight "ghost" operating system that ran entirely from the laptop's RAM. MiniTool Partition Wizard Pro Review: A Detailed Analysis
Once booted, you’ll see a minimal Windows 10/8 interface with prominently on the desktop. Launch it. Unlike the installed version, this one is full-featured with no license prompts.