BootMGR
BOOTMGR, short for Windows Boot Manager, is a small system program used by Windows Vista and later to start the operating system. It runs at startup and selects a boot entry from the boot configuration data, then transfers control to the Windows Boot Loader (winload.exe) to continue the boot process. BOOTMGR is involved in presenting boot options, applying the default entry, and enforcing timeouts.
The boot configuration data (BCD) store is central to BOOTMGR’s function. The BCD contains boot-time parameters,
Location and architecture: On BIOS/legacy systems, BOOTMGR resides on the system partition (often the System Reserved
History and usage: BOOTMGR replaced the older NTLDR boot loader starting with Windows Vista and continues to
Troubleshooting: If BOOTMGR is missing or corrupted, the system may display “BOOTMGR is missing.” Recovery typically