This command deletes an entry from the boot configuration data store. bcdedit /store /delete /f /cleanup | /nocleanup Specifies ...

This command deletes an entry from the boot configuration data store.

bcdedit [/store ] /delete  [/f] [/cleanup | /nocleanup]

          Specifies the store to be used. If this option is not
                    specified, the system store is used. For more information,
                    run "bcdedit /? store".

                Specifies the identifier of the boot entry that you want to
                    delete. For more information about identifiers,
                    run "bcdedit /? ID".

    /f              Deletes the specified entry. Without this option, Bcdedit
                    will not delete any entries that have a well-known
                    identifier.

    /cleanup        Deletes the specified entry and removes the entry from the
                    display order. Any other references to the entry being
                    deleted will also be removed from the store.  When deleting
                    an OS loader entry, the associated resume from hibernation
                    entry is also deleted if it is not referenced by any other
                    OS loaders. This option is assumed unless /nocleanup is
                    specified.

    /nocleanup      Deletes the specified entry without removing the entry from
                    the display order.

Examples:

The following command deletes the specified operating system entry from the
store and removes the entry from the display order:

    bcdedit /delete {cbd971bf-b7b8-4885-951a-fa03044f5d71}

The following command deletes the specified operating system entry from the
store and removes the entry from the display order:

    bcdedit /delete {cbd971bf-b7b8-4885-951a-fa03044f5d71} /cleanup

The following command deletes the specified operating system entry from the
store without removing the entry from the display order:

    bcdedit /delete {cbd971bf-b7b8-4885-951a-fa03044f5d71} /nocleanup

The following command deletes the NTLDR based OS loader entry from the store:

    bcdedit /delete {ntldr} /f