Step 2: In System and Security, click 'Save backup copies of your files with File History'. Step 1: Type 'Control Panel' in the search bar and then press. Taking a Full Backup of a Windows 10 PC on an External Hard Drive.If The Economy Is Strong, The Firm Will Sell 4 Million Drives, But If There Is A Recession, It Will Sell Only Half As Many. Its Total Fixed Costs Are $30 Million, And Its Variable Costs Per Unit Are $190. Question: OceanGate Sells External Hard Drives For $230 Each.