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Diagnostic and Recovery Method for Boot Failure in PC/104-Based Geophysical Resistivity Instruments Following CMOS Configuration Loss: On the ABEM Terrameter SAS-1000/4000 Using the PFM-540I Platform

Article scientifique 2026 Autre

Résumé

Abstract. Boot failures in embedded geophysical instruments frequently arise from the loss of CMOS-retained BIOS parameters, a condition well documented in legacy computing systems that depend on fixed hardware configurations. The ABEM Terrameter SAS-1000/4000 relies on a PC/104 controller (PFM-540I), CompactFlash (CF) storage, and specialized BIOS settings to load its internal firmware. When the CMOS battery depletes, the BIOS reverts to factory defaults that are incompatible with the Terrameter's required hardware profile, resulting in complete boot failure and a black LCD screen. This paper describes a full diagnostic and recovery procedure involving external VGA/PS-2 interfacing, jumper validation, CMOS clearing and manual BIOS reconstruction. The restored system achieved 100% boot success, persistent CF detection and stable BIOS retention across multiple test cycles. The findings provide a validated engineering method for maintaining legacy PC/104-based scientific instruments vulnerable to CMOS configuration loss.

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Dwamena, G., Mensah, B. (2026). Diagnostic and Recovery Method for Boot Failure in PC/104-Based Geophysical Resistivity Instruments Following CMOS Configuration Loss: On the ABEM Terrameter SAS-1000/4000 Using the PFM-540I Platform. https://doi.org/10.5194/egusphere-2025-6396

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Auteur(s)

Gideon Fosu Dwamena Benjamin Ekow Mensah

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