Hi,
I understand that the external USB hard drive doesn’t show in Windows Explorer but detected in Disk Management.
To resolve this kind of issue, I would like to propose the following suggestions:
1.
Go to Device Manager, uninstall the USB hard drive,
scan for the hardware change and let Windows automatically re-install driver for your device.
2.
Open Registry Editor, navigate to the following item:
HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices
Find if your device is registered and assigned a letter.
As a work around, I suggest you accessing the external hard drive via a Command Prompt, copy out the data, then format the hard drive.
1)
Click Start, type: cmd in the Search bar.
2)
Right Click cmd and click Run as Administrator.
3)
Type the following command:
Copy [source] [destination]
Best Regards
Dale
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