You can easily create your own safe, functional portable version. By installing the official, clean version on a staging machine and extracting its core files to a USB drive, you create a personalized tech toolkit without risking your system's security. How to Create Your Safe EasyBCD Portable Toolkit
Windows assigns drive letters dynamically. Ensure that the entry you are modifying points to the correct partition letter as seen by the current session , not what it usually is. easybcd portable