What is an S01 file?
The .S01 file extension is used by several different software applications. Because multiple formats share this extension, you must identify the actual format of your file before you can use it. It can be a temporary file for IBM Lotus Notes, an Expert Witness Format disk image segment used by digital forensics tools like EnCase or X-Ways Forensics, or a MicroStation sheet model file from Bentley Systems.
Other uses include compressed health data submission files, pile driving analyzer data logs from Pile Dynamics, or PCB solder mask files for Altium Designer. It is also commonly known as a ZipSplitter Part 2 File, which is an archive segment created by the Lithops file splitting tool.
How to open S01 files?
Because an .S01 file can contain completely different types of data, you cannot rely on a single software application. If the file is an Expert Witness Format forensic disk image, you need a specialized forensic tool to mount and read the drive segments. If it is a ZipSplitter Part 2 File, you must place all archive parts in the same folder and extract the primary archive file to recombine the contents. If it is a compressed health data file, standard unzipping libraries can often extract the internal documents.
Identify and inspect with viewer.online
If you do not know the origin of your file, viewer.online/s01 can analyze .S01 files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
Summary
Because of the many conflicting formats, viewer.online/s01 is useful for identifying, inspecting, and understanding .S01 files without installing software or dealing with compatibility problems.