Final answer:
To use a new internal hard drive in a Windows 10 PC, initialize the drive in Disk Management, create and format a partition using the New Simple Volume Wizard, and assign a drive letter.
Step-by-step explanation:
After connecting a new internal hard drive to a Windows 10 PC, there are several steps that must be taken to make the drive usable. First, you need to initialize the hard drive, which involves setting a partition style: either Master Boot Record (MBR) or GUID Partition Table (GPT). This can be done using the Disk Management tool. Once the drive is initialized, you'll need to create and format at least one partition on the drive. To create a partition, you can use the New Simple Volume Wizard in Disk Management, which will guide you through the process of setting the size of the partition and assigning a drive letter. After creating a partition, formatting is necessary. You can format the partition with a file system, typically NTFS for Windows 10. After these steps, the operating system will be able to recognize and use the new internal hard drive.