Elements are stored as under each key:
bcdedit /export C:\bcd_backup_YYYYMMDD
The /enum command lists all the boot entries in the BCD store. bcdedit commands
bcdedit /set GUID device partition=D: bcdedit /set GUID osdevice partition=D: Elements are stored as under each key: bcdedit
To revert this later (once inside Windows): bcdedit commands