Well for me mine sits on the C Drive as a hidden system file, which is apparently normal, Do not delete it! as fare as I can tell it has always been hidden on the OS drive (C drive) so just ignore it or make it hidden again.
In the root of the system partition, usually c:\
the BootMgr file and the BCD file are stored in the system partition
system partition
Windows Boot Manager (bootmgr)File,Windows boot loader (winload.exe)File and the Boot Configuration Data (BCD) File
The BOOTMGR is a program that runs when you start your PC, and loads your operating system from the hard drive. When it is missing, Windows is unable to boot.
C:\
Bootmgr is installed by default onto your system. Once you create a bootable partition on your hard drive, you should be given the option right there to enable it.
6es
file allocation table (FAT)
depends where the file is located and what is in the .inf file
Nothing was techinically "replaced", but they booted in phases rather than specific files. This lead to adding bootmgr(Windows Boot Manager) which reads a registry type file that was not used in Windows XP.
NTFS (New Technology File System) is not a specific file. It is a method to organize files on a Windows hard drive.
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