Overview
This lecture explains the differences between upgrading and installing an operating system, key considerations for each method, and the requirements for upgrading to Windows 11.
Upgrade vs. Clean Install
- Upgrade keeps all applications, files, user data, and settings while updating the operating system.
- Clean Install deletes all data and files, creating a fresh installation of the operating system.
- Upgrading is faster and maintains user configurations; ideal for systems with multiple users or complex settings.
- Clean installs require backing up all important data and preferences beforehand to prevent data loss.
Process of Upgrade and Clean Install
- In-place upgrades start from within the existing OS, preserving files and settings.
- Clean installs begin by booting from installation media, wiping all existing data and partitions.
- Always back up data before a clean install, even if users think they will not need old files.
- Installation tools typically include built-in partitioning and formatting features.
- Check for hidden partitions on the drive before reinstalling to avoid accidental data loss.
Pre-Installation Requirements
- Verify system meets memory, storage, and hardware requirements for the new operating system.
- Use tools like Microsoft's PC Health Check to confirm hardware compatibility, especially for Windows 11.
- Prepare answers for installation prompts such as drive selection, partition configurations, and license keys.
- Check software and device driver compatibility with the new OS.
Windows 11 Specific Requirements
- Windows 11 requires TPM 2.0, secure boot, and a UEFI BIOS.
- Use TPM management console (tpm.msc) to view TPM details.
- Use Windows System Information to check secure boot status.
- Older hardware lacking UEFI BIOS may not support Windows 11 and could require replacement.
Operating System Support Life Cycle
- OS manufacturers provide support calendars with quality (security) and feature update schedules.
- Support for most operating systems lasts 18 to 36 months depending on version.
- Microsoft’s "modern life cycle policy" details Windows product support timelines.
Key Terms & Definitions
- Upgrade — Updating the operating system while preserving applications, data, and settings.
- Clean Install — Installing a new OS after deleting all previous data, settings, and applications.
- TPM (Trusted Platform Module) — Motherboard hardware required for certain security features.
- UEFI BIOS — Modern BIOS standard supporting secure boot needed for Windows 11.
- Secure Boot — BIOS feature ensuring only trusted operating system software loads.
Action Items / Next Steps
- Back up all important files and user preferences before installing a new OS.
- Run PC Health Check (Windows 11) or similar tool to confirm hardware compatibility.
- Check compatibility of all critical applications and drivers with the new OS.
- Gather required installation information and license keys before starting the process.