Bcdboot - Bcd boot file creation and repair tool.
The bcdboot.exe command-line tool is used to copy critical boot files to the
system partition and to create a new system BCD store.
bcdboot [/l ] [/s [/f ]] [/v]
[/m [{OS Loader ID}]] [/addlast] [/p] [/c]
source Specifies the location of the windows system root.
/l Specifies an optional locale parameter to use when
initializing the BCD store. The default is US English.
/s Specifies an optional volume letter parameter to designate
the target system partition where boot environment files are
copied. The default is the system partition identified by
the firmware.
/v Enables verbose mode.
/m If an OS loader GUID is provided, this option merges the
given loader object with the system template to produce a
bootable entry. Otherwise, only global objects are merged.
/d Specifies that the existing default windows boot entry
should be preserved.
/f Used with the /s command, specifies the firmware type of the
target system partition. Options for are 'UEFI',
'BIOS', or 'ALL'.
/addlast Specifies that the windows boot manager firmware entry
should be added last. The default behavior is to add it
first.
/p Specifies that the windows boot manager firmware entry
position should be preserved. If entry does not exist,
new entry will be added in the first position.
/c Specifies that any existing objects described by the template
should not be migrated.
Examples: bcdboot c:\windows /l en-us
bcdboot c:\windows /s h:
bcdboot c:\windows /s h: /f UEFI
bcdboot c:\windows /m {d58d10c6-df53-11dc-878f-00064f4f4e08}
bcdboot c:\windows /d /addlast
bcdboot c:\windows /p