Exploring Boot Configurations and Startup Options

1. Introduction to the Boot Process

Before loading the operating system, a computer must go through the boot process, which initializes hardware and system software. This process is managed by BIOS or UEFI, including settings such as boot order, boot mode, and device selection.

2. Boot Options in UEFI

UEFI has replaced legacy BIOS in modern systems. It offers features like Secure Boot, faster startup, and support for large disks with GPT. To install Windows Server 2025, configure the primary boot device (USB or DVD) in UEFI settings and enable Secure Boot for enhanced security.

Common Keys to Access UEFI:

• F2
• F10
• Delete
• Esc

3. Boot Options in BIOS

• DVD: Insert a bootable DVD and set it as the primary device in BIOS.
• USB Flash Drive: Use a bootable USB drive (minimum 8 GB) and set it in the boot sequence.
• Network Boot (PXE): Enable PXE Boot in BIOS to load installation files from a remote server.

4. Startup Process in BIOS

When powering on, the motherboard’s ROM activates the BIOS program. BIOS configures CPU, memory, and disks, and identifies bootable devices such as CD-ROM, USB, and network interfaces.

5. Advantages of UEFI over BIOS

• Faster and more secure booting
• Support for disks larger than 2 TB
• Enhanced graphical interface
• Easy firmware updates from manufacturer websites

Example Command to Check GPT Disks:

diskpart
list disk

Conclusion

Understanding BIOS and UEFI is essential for installing and managing Windows Server 2025. Proper boot configuration and enabling Secure Boot improve system security and efficiency, ensuring a smooth installation process.