How to Repair, Reinstall OS, and Link Two Lenovo ThinkStation PGX Units

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A researcher who acquired several Lenovo ThinkStation PGX units — ARM-based GPU workstations built through an NVIDIA-Lenovo collaboration — documented how to fix a unit whose operating system would not boot. The repair involved reinstalling the OS using a Lenovo-customized ISO image, which differs from the standard GB10 image available on NVIDIA's website and is not directly provided in official documentation. The process requires creating a bootable USB drive with Rufus, using a wired USB keyboard (wireless 2.4G keyboards are unsupported), and following on-screen prompts through the GRUB and DGX installer menus. The author also outlined how to connect two PGX machines for multi-GPU networking via their built-in QSFP 200G ports, noting that compatible switches are expensive and hard to source, limiting most setups to a direct two-machine link. A key prerequisite for the multi-machine setup is ensuring both systems share the same Linux username before establishing the connection.

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