When you first connect a drive it may take some time for the Pogoplug service to detect the drive, and that is why GoFlex Net's Web interface may not recognize (a) drive(s) connected to it.
There are two factors at work here:
The larger the drive, the more time it takes for the web service to recognize the drive.
The more individual files saved to the drive, the longer it takes for the web service to recognize the drive.
With large drives that have lots of small files saved to them, patience is the best troubleshooting step to allow the drives to be recognized by the Pogoplug web service.
Even if you are patient, sometimes the drive will simply not recognize at all. This symptom can occur when a drive has been improperly removed (disconnected) from the GoFlex Net. When a drive is not recognized by the GoFlex Net, do the following:
Ensure all cables, connections and devices are properly connected into their respective connectors.
Connect the drive directly to a Mac or PC to see if the operating system recognizes it. If so, delete the .cedata folder and .ceid files from the drive, then return to the GoFlex Net for connection.
If all else fails, perform drive diagnostics on the USB drive; if the diagnostics pass, then repartition/reformat the USB drive prior to returning it to the GoFlex Net.
-Format instructions in Windows 7 and Vista
-Format instructions in Windows XP
Note: Most connectivity/recognition issues stem from improper removal of a USB drive from the GoFlex Net. Please refer to Seagate's Knowledge Base for information on proper drive removal procedures.