We’ve received numerous questions around what .001 files are and how to use them. 001 files are the format for split files. .001 files are usually numbered as .001, .002, .003, etc. They are not compressed and contain separate components of a file. In order for a .001 file to work, it must be “joined” back together. Many times .001 files will be joined to create an ISO or a Bin File.
You must be curious how to extract them…..let’s check out.
Instead of using a program like WinRAR or 7Zip to compress and break apart files, the .001 split format is just a file that has been divided into several parts for easier posting. Most of the articles or binary files that you download from binary newsgroups will be in a RAR format such as filename.part01.rar, filename.part02, etc. These files can be extracted-put back together into its original state by an UNRAR’ing program . In most cases, .001 files cannot be put back together by UnRAR programs.
UnRAR/Extraction programs like Winrar do not extract the .001 split files because the files were never compressed. They are usually split apart by a file splitting program such as hjsplit or 001filejoinerspliter.
How to Open .001 Files
There are several free well known tools that can split files or put .001 files into the original state.
– 001 File Joiner and Spliter
The file part that ends with the 001 file extension contains the data that will open and join the rest of the .00X extensions together. Most of the programs should find the rest of the .001 parts (.002, .003, etc.) if they are in the same containing folder.
How to extract or join a .001 file with 7Zip
Many folks try to open .001 files with WinRAR . More often than not, Winrar will not extract or join 001 files. However, 7-Zip is a powerful unraring tool that is able to join .001 files together.
Joining .001 files with 7Zip is very simple. First you need to make sure you have 7Zip installed. You can learn how to install and configure 7 Zip here. Once you have 7Zip installed, find the .001 file set that you would like to join. Make sure the rest of the 001 file set is in the same containing folder.