How many hours are required to restore the OS and software to a new hard disk?

• A. 8 hours
• B. 10 hours
• C. 12 hours
• D. 6 hours

Answer: (B)

Disaster recovery time estimation for a bare-metal restore of the OS and software to a new disk is driven by the full sequence of work needed to bring the system back online. It isn’t just copying data; it includes deploying the operating system (often from a pre-made image), installing drivers, applying patches and updates, reinstalling and configuring applications, handling licenses, tightening security settings, and running validation tests to ensure the system boots and services operate correctly. Because every step must be completed and checked, a practical, mid-size environment typically requires about ten hours to complete the restore. Shorter times would rely on highly automated deployment and pre-staged images, while longer times might occur in larger, more complex environments or with more extensive verification.