Select "Custom: Install Windows only (advanced)" for a clean installation.
Set a complex administrator password once the system reboots.
Always back up existing data, especially for infrastructure servers like DHCP . 2. The Installation Process Installing and Configuring Windows Server 2012 ...
Insert your DVD or USB and adjust the BIOS/UEFI boot order to prioritize the installation media.
Before starting, ensure your hardware meets the Microsoft Recommended requirements: 1.4 GHz 64-bit (2 GHz or faster recommended). Select "Custom: Install Windows only (advanced)" for a
Crucial Step: You must choose between (command-line only) and Server with a GUI .
32 GB minimum; use GPT partitioning for disks larger than 2 TB. Installing and Configuring Windows Server 2012 ...
512 MB RAM (minimum), though 2 GB or more is standard.