- The quick facts

What are BOOTBLOCKS files and how to open them

Are you having problems opening a BOOTBLOCKS file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a BOOTBLOCKS file?

A .BOOTBLOCKS file is a VirusZ III Bootblocks Data file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open BOOTBLOCKS files

Important: Different programs may use files with the BOOTBLOCKS file extension for different purposes, so unless you are sure which format your BOOTBLOCKS 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: June 29, 2022

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about BOOTBLOCKS file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.