Worked on the Lima VM project, focusing on backend development using Go to improve the QEMU driver’s mounting workflow. Addressed a bug in mount type validation by refining error messaging to deliver accurate, OS-specific feedback, particularly for Windows environments. This update in the lima-vm/lima repository reduced ambiguity in error reports, making troubleshooting more straightforward for Windows users and enhancing the reliability of shared folder mounting. The work demonstrated careful debugging and attention to cross-platform validation, laying the foundation for broader improvements in validation logic and contributing to a better developer experience when working with backend systems in Go.