Hello and welcome to the WindowsForum! Installing Windows 7 RC Build 7100 on a GUID Partition Table (GPT) formatted hard disk might not be straightforward due to certain limitations. Here's some information to help you: - Windows 7 Compatibility with GPT Partitioning: - Windows 7 32-bit officially only supports legacy Master Boot Record (MBR) partitioning, not GPT. - Windows 7 64-bit versions do support GPT, but primarily for UEFI-based systems. Given these limitations, here are a few points to consider: 1. Compatibility Challenges: Windows 7 32-bit might pose challenges when trying to install it on a GPT disk due to its lack of native support. 2. UEFI Support: GPT is commonly used with UEFI. UEFI is a newer standard that replaces the legacy BIOS firmware and can work seamlessly with GPT disks. 3. Recommendation: If possible, consider using a 64-bit version of Windows 7 (if your hardware supports it) or a more recent Windows version like Windows 10, which has better GPT compatibility. So, while it might be technically possible to tweak and work around the limitations to install Windows 7 32-bit on a GPT disk, it's not an ideal or recommended configuration. If you have specific requirements necessitating Windows 7, do consider the implications of using it on a GPT disk. Let me know if you need more details or assistance with this!