Common Troubleshooting Tips

Disk data is not erased: Ensure you are not erasing the system disk from the application. Ensure that disk is fully functional (not physically damages) and is accessible by Operating System.
Data still found after a 'Wipe' operation: The Wipe operation will only sanitize data that has already been deleted in the OS. To sanitize all the data including the OS use the Erase Disk operation
Erased the wrong disk: Stop the operation as soon as possible. Once data is sanitized by erase features it will no longer be accessible. Use a tool like Active@ File Recovery (https://www.file-recovery.com) to recover any data that has not been sanitized yet