Few error messages are as frustrating as this one. You plug in an external drive, open an internal partition, or try to access an old user folder, and Windows slams the door in your face.
The good news: It almost always means Windows has lost permission to let your current account read the files. hard disk access denied
Below is a complete breakdown of why this happens and how to fix it. This error falls into three main categories: Few error messages are as frustrating as this one
In 90% of cases, takeown and icacls will solve the problem without data loss. Do not format. Do not re-partition. Just fix the permissions. Need help with a specific error code? Add cacls or icacls output in the comments below. Below is a complete breakdown of why this
"Location is not available. D:\ is not accessible. Access Denied."