A GPT header damage recovery test asks whether a surviving backup can reconstruct damaged partition metadata. In the generated sample below, it can—provided the backup header and its entry array validate and describe the intended layout. However, a matching header CRC alone does not establish that the partition table is usable. This experiment calculates seven metadata states, including two counterexamples that pass the header checksum. It then rebuilds the primary GPT from the backup and checks the result against the baseline. Table of Contents Research Question and Scope The question is specific: after a defined change near the beginning of a GPT disk, does the surviving metadata support reconstruction of […]
