Baxter robot's RSDK GUI not booting

A robotics engineer has hit a major roadblock while attempting to revive a Baxter robot that had been sitting unused for several years. The user, MinhBao19, successfully performed a deep-level recovery on the robot's internal Dell OptiPlex 7010 computer, which included resetting a locked BIOS password via a hardware jumper, booting from a Live USB, and using a `chroot` to reset a lost SSH password. Despite gaining full SSH and console access, the system stubbornly boots only into a bare Gentoo Linux console, completely failing to launch the proprietary RSDK (Robot Software Development Kit) environment—a specialized Ubuntu layer that hosts the Baxter's graphical interface and core runtime services.

The core problem is that the boot process is not transitioning from the base Gentoo layer to the application-specific RSDK layer, leaving the robot functionally headless. The user has confirmed that ROS Indigo tools are partially accessible and that the hardware is functional, but the critical services that bring the robot to life are not starting. This incident underscores a significant pain point in industrial robotics: the long-term maintenance of closed, proprietary systems. The original manufacturer, Rethink Robotics, is defunct, and its assets were acquired by Cothinks Robotics, who have been unresponsive. The user's primary goal is to avoid a full system wipe, as the original Baxter system image is notoriously difficult to find, making this a high-stakes software archaeology project for keeping legacy automation hardware operational.