Why can’t I copy/transfer files from my old SD card to my new one?

Understanding and Resolving SD Card File Transfer Issues: A Guide to Error 0x80070079

Encountering difficulties when transferring files from an old SD card to a new one can be frustrating, especially when error messages like “Error 0x80070079: The semaphore timeout period has ended” appear. If you’re experiencing this problem, you’re not alone, and there are several troubleshooting steps you can take to successfully move your data.

Common Causes of File Transfer Errors

The “semaphore timeout period has ended” error typically indicates a communication problem between your computer and the SD card reader or the SD card itself. Causes can include:

• Faulty or loose connecting hardware (card reader, USB port, or SD card slot)
• Corrupted files or filesystem errors on the SD card
• Power issues or insufficient permissions
• Compatibility problems between the SD cards and your computer

Step-by-Step Troubleshooting

1. Check Hardware Connections

2. Ensure the SD card is properly inserted into the card reader.

3. Try connecting the card reader to a different USB port.
4. Use a different card reader if available, to rule out hardware failure.

5. Test the SD cards on another computer to determine if the issue persists.

6. Verify the SD Card’s Health

7. Use disk checking tools to scan for filesystem errors:

8. On Windows, right-click the SD card drive in File Explorer, select Properties > Tools > Check (Error Checking).

9. Consider using specialized disk utility software to check for bad sectors.

10. Format the Old SD Card (if data transfer is no longer needed)

Note: Formatting will erase all data on the card. Ensure you have backups if necessary.

• Backup files if possible.
• Format the card using Windows’ built-in formatter:
• Right-click the SD card in File Explorer, choose Format.
• Select the appropriate filesystem (exFAT is recommended for large SD cards).

• After formatting, attempt to copy files again.

• Transfer Files in Smaller Batches

Large files or many small files can sometimes cause transfer issues.

• Copy files in smaller groups.

• Use alternative transfer methods, such as cloud storage or external drives, if direct copying fails.

• Use Data Recovery and Transfer Tools

• Utilize file management software designed for data recovery and transfer.

• Programs like TeraCopy can sometimes bypass issues encountered in Windows Explorer.

• Check for Driver Updates

• Ensure your SD card reader drivers are current:

• Visit the