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.
the BootMgr file and the BCD file are stored in the system partition
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.
The BOOTMGR (Boot Manager) is stored in the boot sector of the system partition on a Windows system. It is typically located in the first sector of the hard disk.
When you rename the BootMgr file in the root directory (C:) and reboot the system, you typically encounter an error message such as "BOOTMGR is missing. Press Ctrl+Alt+Del to restart." This occurs because the system is unable to locate the necessary boot manager file to initiate the operating system, resulting in a failure to boot. Restoring the original name of the BootMgr file is essential to resolve this issue.
You can find here all required information http://www.howtogeek.com/howto/windows-vista/fixing-bootmgr-is-missing-error-while-trying-to-boot-windows-vista/
system partition
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if you have original windows 7 disc, you can reinstall it if you have recovery windows 7 disc, you can fix it
The Boot Manager (bootmgr) is a critical component of the Windows operating system responsible for managing the boot process. It reads the Boot Configuration Data (BCD) to determine which operating system to load, particularly in multi-boot environments. Additionally, it provides a user interface for selecting different OS options and can initiate recovery tools if necessary. Overall, bootmgr ensures that the correct OS is loaded efficiently and reliably during system startup.
Windows Boot Manager (bootmgr)File,Windows boot loader (winload.exe)File and the Boot Configuration Data (BCD) File
That simply means that your Bootloader which is responsible for loading basic system information can't be found since your local installation source had been compressed. follow the following steps to repair the bootmgr file > insert your Windows 7 CD > run setup > click on repair computer > select drive and window installation which is to be repaired > go to DOS prompt window > type in your OS driver usually C: > then type in bootrec /fixmbr > then type in bootrec /fixboot > then type in bootrec /rebuildbcd > then type in exit > restart your computer
What is Install Developer? which are tools they install? where it is use?