On Unified Extensible Firmware Interface (UEFI)-based computers, firmware creates non-volatile random access memory (NVRAM) entries for local devices (such as Optical Disk- or Hardisk drives) when the computer boots. BCDEdit synchronizes the firmware namespace object in NVRAM with the system boot configuration data (BCD).
In case there is more than one Windows installation or another type of OS has been installed (for example Linux OS installation) on the computer, additional bootloader entries are created and shown in the boot manager list. This document describes how to remove unwanted entries on Windows 10 using the BCDEdit command.
Please note, in case a still required bootloader entry will be deleted, the related OS won't boot anymore.
HOW TO REMOVE UEFI (NVRAM) BOOT MANAGER ENTRIES ON WINDOWS 10
For more information, please check official BCDEdit documentation at Microsoft:
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