CARD READER DIAGNOSTIC RECORD - Yenra Guide: https://yenra.com/card-reader/ Complete one record per problem. Keep needed source files unchanged. Cancel initialize, erase, format and repair prompts until a data-preservation decision has been made. Use healthy supported media with expendable files for connection tests. Stop ordinary tests on a card with repeated read errors or disconnects. Date / person / case identifier: Card markings, family, capacity and original device: Needed files present? Yes / No / Unknown: Independent verified copy exists? Location and date: Reader and adapter model / supporting manual URL: Computer model / OS / port / cable / hub or dock: OBSERVATIONS (do not start a repair to obtain these) Reader visible in device list? Status / exact error: Storage visible in Disk Management or Disk Utility? Reported size: Volume visible? Filesystem / drive letter / exact status: File manager can copy files? Result: Application name/version and file type / exact error: ONE CHANGE AT A TIME - repeat this block as needed Healthy expendable test card identifier: Changed component or connection: Expected observation: Actual result / date: What this establishes / what remains unresolved: FINAL DECISION Stable reading path established? Evidence: Source copied and independently verified? Result / log: STOP / recovery or manufacturer support needed? Reason: Component to remove from service / next action / responsible person: