Changes that Microsoft has made to security means that it is no longer possible to access Nucleus or ROCK folders. Then the Group Policy Editor of Windows or Powershell can be used to work around this. See the article referenced below.
Windows File Explorer has a habit of not finding non-Windows devices in your network until it’s told to do so. So typing \\rock\ in the address field (note: NOT the Search field) of File Explorer will kick Windows into displaying it again. In this situation, mapping a Windows drive to a folder in the ROCK/NUC will pin it permanently in File Explorer as a drive on your PC.
Are you still experiencing the issue after following the recommendation from @Geoff_Coupe ? If so, we’re happy to continue helping.
In the meantime, here are our step-by-step guidelines on how to manage internal storage. The article is written for Nucleus, but the process is identical for ROCK — the only difference is the network address you use to access the storage:
Please let us know if you’re still running into trouble or if everything is working now.