Worked on the trycua/cua repository to enhance the stability and data integrity of Linux virtual machines running under Apple’s Virtualization framework. Addressed a critical issue by modifying the virtio block device caching mode to .cached, which prevents EXT4 filesystem corruption, particularly for VMs stored on external drives. This solution leveraged expertise in Swift programming, macOS development, and virtualization technologies, ensuring that Linux VMs maintain reliable storage behavior without impacting macOS guests. The change was thoroughly documented and aligned with similar fixes in related projects, reducing the risk of data loss and improving overall robustness for users managing Linux VMs.