BOO File – What is .boo file and how to open it?


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BOO File Extension

Booasm Compressed Archive – file format by Microsoft

BOO is a file extension for a Booasm Compressed Archive developed by Microsoft. It is a compressed archive format used to store multiple files and folders in a single compressed file. The BOO format is designed to be highly efficient and can significantly reduce the size of the original files.

What is a BOO file?

A BOO file is a Booasm Compressed Archive, a proprietary file format developed by Microsoft for storing compressed files. It was primarily used to reduce the file size of Macintosh applications when distributing software via bulletin boards and online services. BOO files utilize a compression algorithm designed to minimize the space occupied by files, making them suitable for sharing and downloading in a dial-up era.

Similar to other compressed archive formats like ZIP and RAR, BOO files can contain multiple individual files or folders, which are stored in a compressed format within the BOO file. The compression process involves reducing the file size while maintaining the integrity of the original data. To access the contents of a BOO file, users require a compatible program, such as a decompression tool or a software package that supports handling BOO files.

Opening BOO Files

BOO files are compressed archives created using Microsoft’s Booasm tool, a command-line utility for assembling x86 code. To open a BOO file, you will need a compatible decompression tool that can recognize the BOO format. One such tool is Booasm itself, which can be used to both create and extract BOO archives.

Using Booasm to Open BOO Files

To open a BOO file using Booasm, follow these steps:

  1. Download and install Booasm from Microsoft’s website.
  2. Open a command prompt or terminal window.
  3. Enter the following command:


booasm -x archive.boo

where “archive.boo” is the name of the BOO file you want to extract.

Booasm will extract the contents of the BOO archive to the current directory. You can then access the extracted files as needed.

BOO File Format

The BOO file extension is associated with the Booasm Compressed Archive file format, which was created by Microsoft. It is a compressed archive format specifically designed for storing booasm code. Booasm is a low-level assembler for the Xbox video game console. The BOO file format is not widely used outside of the Xbox development community.

Usage of BOO Files

BOO files are typically used to store and distribute booasm code. Booasm code is used to create executable programs for the Xbox console. BOO files can be compressed using a variety of compression algorithms, which can reduce their size by up to 50%. This makes them ideal for distributing booasm code over the internet or other networks.

BOO files can be opened and extracted using a variety of software programs, including the Xbox Development Kit (XDK) and the BOOasm command-line tool. The XDK is a suite of tools used to develop games for the Xbox console. The BOOasm command-line tool is a standalone program that can be used to assemble and disassemble booasm code.

Other Extensions