How Do I Reconnect My D Drive?

[Lucrarellovski]

My D drive became disconnected, but my C drive with the Public folder and desktop are unaffected.
i've tried using Windows + R to access Disk Management and Command Prompt, but "Rescan Disk" doesn't appear under Action, only Help.
I would greatly appreciate any advice on how to resolve this issue.

 

[Bighorn]

I just checked a Notebook that has a USB drive plugged in and it didn't show in DM and Action choices were dimmed out and also didn't show in Safely Remove so I unplugged it then plugged back in and drive was recognized, DM's Action shows the Refresh and Rescan. Sometime during the night the use of the drive was discontinued but okay after replugging. Sometimes the Power settings for onboard devices such as the USB ports will get them turned off, might be something to check.