Online RootFS growth
On growth-enabled images, Sandbox0 automatically expands the writable RootFS as free space runs low, within a configured sparse logical ceiling up to 64 TiB. Agent processes keep running. Growth is enabled in the qualified Cloud region; confirm activation for other regions. Existing images and snapshots retain their captured storage geometry. The ceiling is logical capacity, not preallocated host disk.
Personal Cloud PCs already retain a full Windows desktop environment, and Enterprise Resize preserves disk data while changing supported resources. It is an explicit licensed resize, not an integrated automatic online low-space RootFS growth policy.