BXRC File

What are BXRC files and how to open them

Are you having problems opening a BXRC file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your BXRC files.

What is a BXRC file?

A .BXRC file is a Bochs Configuration file.

Bochs Configuration files store setup instructions for the Bochs PC emulator to describe what virtual hardware and system environment to simulate and how to start up. These text-format files are generated and read by Bochs itself when configuring a simulated PC, specifying devices, memory, BIOS images, boot options, and other emulation settings. They are good for defining a full virtual machine environment without using graphical menus or command-line flags.

The configuration file is written by the user or by sample files included with Bochs, and it is loaded by the Bochs program when booting or when passed via the -f option. Bochs searches for a configuration file in several default locations (for example .bochsrc, bochsrc.txt, or on Windows bochsrc.bxrc) if none is given on the command line. Once loaded, command-line options may override entries in the file. The file uses lines with keywords (such as memory, cpu, romimage, vgaromimage, boot) followed by a colon and comma-separated name=value pairs where appropriate, and it supports environment variables for specifying paths.

The format is strict on syntax: lowercase letters for keywords, correct spacing, and the pattern "keyword: property=value,property=value…" for most entries, though some options accept a single value. The file may include #include statements to pull in other configuration files. Bochs provides a sample configuration file (bochsrc-sample.txt) in its installations to help users begin customizing parameters.

Files using this configuration format start with a specific ASCII header signature at offset zero: the bytes correspond to "#configurationfilegeneratedbyBochs" as a prose comment identifying the file.

How to open BXRC files

Important: Different programs may use files with the BXRC file extension for different purposes, so unless you are sure which format your BXRC file is, you may need to try a few different programs.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Last updated: August 25, 2026

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