What must you do in Disk Management so that File Explorer can recognize and use a new hard disk?

Create a new Volume/Partition

Explanation:

Typically, you want to make sure your drive is formatted and create a new volume span containing your drive space. For your PC to recognize the drive, it must be connected via SATA power and data. If it doesn't detect the drive otherwise, check if it has drivers installed in Device Manager. Go through the partition wizard to format your drive and mount a letter. After that it should be usable upon completion.

f7 should open the spelling and grammer dialog box

yes, but you must first make sure that you'll be able to make your turn or you can crash into other vehicles.