action centre flag on the task bar request - Insert removeable media

[Offa]

How can prevent this? I have a feeling it may be my original set up, or is it just somewhere I haven't looked?

 

[carwiz]

The Action Center Settings determine what messages appear but the only thing I can think of that would give you that message would be a scheduled backup requesting media. Check your backup settings to see if it goes to a removable drive.