ux0

ux0 is the primary user storage partition on the Sony PlayStation Vita’s filesystem. In the Vita’s OS and in many homebrew environments, ux0: is the main location where user content is stored, including installed games or apps, downloadable content, saves, patches, and media. It is distinct from other partitions such as ur0:, which is the system partition containing core OS files, and from uma0:, which refers to the memory card storage in some configurations.

On official firmware, access to ux0 is restricted to the system and sanctioned apps. When the device is configured for homebrew or custom firmware, ux0 can be accessed more directly by file managers and development tools, making it the default target for installing unofficial software and for moving or backing up data. The contents of ux0 are typically organized under subdirectories such as ux0:/apps, ux0:/data, and ux0:/home, depending on the software in use.

Because ux0 stores user data and applications, improper modification or deletion can lead to data loss or stability issues. Users who experiment with ux0 should ensure proper backups and be cautious when transferring files between the Vita and a computer. In the ecosystem, ux0 remains a central concept for understanding how the Vita organizes user content, alongside other partitions like ur0: and uma0: that serve different roles in the device’s storage architecture.