What is a NVRAM file?
An .NVRAM file is primarily a VMware NVRAM File. It stores the BIOS or UEFI firmware settings for a virtual machine created by VMware software, such as VMware Workstation or VMware ESXi. When a virtual machine boots, it reads this file to load system configurations, similar to how a physical computer relies on a motherboard CMOS chip.
How to open NVRAM files?
Usually, you do not open .NVRAM files manually. They are automatically managed by VMware products when a virtual machine runs. If you need to edit the virtual BIOS, you can enter the BIOS setup screen during the virtual machine boot process. If an .NVRAM file becomes corrupt, you can safely delete it while the virtual machine is powered off; the software will generate a default configuration on the next boot.
Software and tools
The primary tools that interact with these files are virtualization hypervisors like VMware Workstation Pro, VMware Fusion, and VMware vSphere. Advanced users might use hexadecimal editors like HxD or command-line string extraction utilities to inspect the binary data inside an .NVRAM file if troubleshooting boot issues.
Analyze and Inspect Online
Because .NVRAM files contain proprietary binary data, they can be difficult to read. viewer.online/nvram can analyze .NVRAM files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available. Since the extension might occasionally be used by other embedded systems for Non-Volatile RAM dumps, our tool helps verify the actual format of the user's file.
Summary
viewer.online/nvram is highly useful for identifying, inspecting, and understanding .NVRAM files without installing virtualization software or dealing with compatibility problems. It provides a fast and secure way to extract diagnostic information from virtual machine firmware files.