Verify that your hard drive usb interface is using usb 2 0.
External hard drive for raspberry pi.
By default your raspberry pi automatically mounts some of the popular file systems such as fat ntfs and hfs at the media pi hard drive label location.
Do not use a usb hub plug the hard drive directly into the raspberry pi.
You can connect your external hard disk ssd or usb stick to any of the usb ports on the raspberry pi and mount the file system to access the data stored on it.