Easily add Windows (Vista–11), Linux/Ubuntu, macOS, and BSD to your boot menu.

Plug the USB drive into the problematic PC. Open the folder and run EasyBCD.exe as an Administrator. The software will read the local BCD store of the machine you plugged it into, allowing you to fix boot errors instantly. Critical Safety Warning: UEFI vs. MBR

EasyBCD Portable is a lightweight, portable edition of EasyBCD (a Windows bootloader/BCD editor) that you can run from a USB stick without installing. It helps you manage and edit the Windows Boot Configuration Data (BCD), add or remove boot entries, and set up multi-boot between Windows versions and other OSes.

: The tool can "deploy" a BCD (Boot Configuration Data) to a USB drive, making that drive the primary boot manager for any system it's plugged into.

If the system is throwing random blue screens at boot, use the "Reset BCD configuration" option to clear out dead paths, then re-add your primary C: drive Windows installation.

You are testing different boot configurations and want a tool that can be deleted completely without an uninstaller. How to Use EasyBCD Portable Using the portable version is straightforward:

: Easily switch between Windows, Linux, macOS, and BSD during startup.