How to Open 001 files or extract 001 files with 7-Zip. If you've come across files with numbered extensions like .001, .002, .003, etc., you're dealing with a split archive. These files have been divided into smaller parts using a "file splitter" to make large files easier to store, transfer, or back up.
Each numbered file represents just a fragment of the complete program. To restore the full application or data, these parts must be "joined" together and then extracted using a "file joiner" tool.
Once joined, the result could be an ISO or BIN file, a directory of installation files, or in some cases, a ready-to-run .exe executable file.
The primary reason for splitting large files is to save storage space. Another key reason is that FAT32 file systems cannot store files larger than 4GB. Therefore, files exceeding 4GB need to be split if stored on FAT32.
Pro Tip: The .001 file contains all the necessary information to combine and extract the rest of the numbered parts (e.g., .002, .003, .004, etc.).
What is a .001 File?
A file with the ".001" extension is usually part of a split archive created by compression or file splitting software, such as WinRAR, 7-Zip, or HJSplit. This method allows large files to be divided into smaller parts for easier distribution or storage.
Here’s how it works:
- The original file is divided into smaller parts, each with extensions like .001, .002, .003, etc. For example, if you have a file named "example.rar," it might be split into "example.001," "example.002," and so on.
- To extract the original file, you need all parts. Archive software will recognize these numbered parts and extract the contents into a single file.
- You typically only need to open the .001 file (the first part), and the software will automatically locate and use the other parts if they are in the same folder.
- Once all parts are available, the software will combine them and recreate the original file.
Keep in mind that ".001" files aren’t standard formats like .zip or .rar. They’re part of a split archive created by specific archiving tools, so you’ll need compatible software to extract the contents.
How to Open 001 Files with 7-Zip
You can use 7 Zip, a well known free archiver tool to open .001 files, so that the contents can be extracted. Here's how:
- Download 7 Zip and then launch 7z####.exe to start the program.
- Browse to your file ending with the .001 extension.
- Right click on the file and choose 7-Zip > Extract Here
- The contents will be extracted to the same directory that contains the .001 - .009 parts. All of the files from that archive should now be joined, merged, or combined to form the original program.
If the program was originally an ISO, you may end up with a .bin and a .cue file, you can then create a CD/DVD from the .bin file using your favorite CD/DVD creation software.
Note: 7-Zip can be used for both a file joiner for joining files and to extract 001 files, splitting them.
Open or Rejoin 001 Files Using HJSplit
To rejoin 001 files with the HJSplit file joiner tool, follow these steps:
- Download HJSplit and unzip and launch the executable.
- Select "Join" Mode: In HJSplit, there are two modes: "Split" and "Join." Click the "Join" button to combine the .001 files.
- Choose the Input File (.001): Click the "Input File" button, navigate to the folder with your .001 file, and select it. This file will guide the software in locating the other parts (e.g., .002, .003, etc.).
- Choose the Output Location: In the "Output File" section, specify where you want the reassembled file to be saved and give it a name.
- Start Joining: Click "Start" to begin the joining process. HJSplit will automatically locate the other parts in the same folder and merge them into one file.
- Wait for Completion: The joining process will take a few moments. Once finished, HJSplit will confirm that the operation was successful.
- Access the Rejoined File: Go to the output location you specified to find the combined file.
HJSplit is a straightforward file joiner tool for joining split archives like .001 files. As long as all parts are in the same folder, it will automatically recognize and combine them into the original file.
Frequently Asked Questions
- What is a .001 file?
- A file with a ".001" extension is part of a split archive created by compression or file-splitting software. It’s a fragment of a larger file split into multiple parts for easier storage and distribution.
- How do I open 001 files with 7-Zip?
- To open .001 files with 7-Zip, download and install 7-Zip, then right-click on the .001 file and choose 7-Zip > Extract Here. Ensure all the parts (.002, .003, etc.) are in the same folder for successful extraction.
- Can I extract 001 file without joining it first?
- No, you cannot extract 001 file on its own. You need all the split parts in the same directory for the software to combine them before extraction.
- What should I do if the .001 files are not in the same folder?
- Make sure all parts (.001, .002, .003, etc.) are in the same folder. If they’re not, move them to the same directory and try extracting again.
- Can HJSplit be used to join 001 files?
- Yes, HJSplit can be used to join 001 files. Simply select the first .001 file in the "Join" mode, specify an output location, and start the process. Once completed, the original file will be reassembled.
Final Thoughts
In conclusion, opening and extracting 001 files is easy with the right tools like 7-Zip or HJSplit file joiner. By following the steps in this guide, you’ll be able to join and extract split archives, whether you're working with large files for storage or distribution.
Always ensure that all parts of the archive (.001, .002, etc.) are in the same folder for a seamless extraction process. With the correct tools and some knowledge, you can quickly reassemble and access your files. Happy extracting!