Help with Windows 7 explorer not showing internal HDD?

You should probably initialize and format the new disk first. Use Disk Management for this, instructions are at a href="http://help.artaro.eu/index.php/windows-7/essential-windows-7-administration/disk-management-in-windows-7.html" rel="nofollow"http://help.artaro.eu/index.php/windows-…/a