Open/Extract 001/7z.001 File with Freeware on Windows/Mac/Linux

001/7z.001 is part 1 of a compressed archive created by 7-Zip, a free file compression and decompression utility; contains one part of a multi-volume archive that splits a .7z file into parts (other parts use the ".7z.002," ".7z.003," etc. extensions); enables large 7z files to be broken into smaller parts for piecewise download or for storage on external media with fixed capacities.

You need all parts of a 7-Zip split archive in order for 7-Zip to rebuild the original ".7z" file. Once 7-Zip has reconstructed the 7z file, it can then decompress the 7z file to extract the files from the compressed archive.

7-Zip does use the following sequence:

.7z.001 for first volume
.7z.002, .7z.003, .7z.004, ..., etc. for any additional volumes

7z is compressed archive created with Igor Pavlov's 7-Zip file compression utility; uses open-source LZMA compression, which has a high compression ratio and can include strong AES-256 (256-bit) encryption; supports Unicode file names, archive header compression, and file sizes up to 16,000,000,000 GB.

While 7z compression uses the LZMA method by default, the 7z format also supports the PPMD, BCJ, BCJ2, BZip2, and Deflate compression methods.

Open/Extract 001/7z.001 File on Windows

Easy 7-Zip opens/extracts 001/7z.001 file easily on Windows. The Easy 7-Zip was developed based on 7-Zip. 7-Zip is a famous open source file archiver. The Easy 7-Zip is an easy-to-use version of 7-Zip. The open source freeware keeps all features of 7-Zip and adds a few useful features that makes the software more user-friendly.

Easy 7-Zip works on Windows 10/8.1/8/7/Vista/2008/2003/XP/2000 (both 32-bit and 64-bit compatible).

Free Download Easy 7-Zip
Install Easy 7-Zip by step-by-step instructions
The installation will associate 001/7z.001 with Easy 7-Zip automatically
Double-click on 001/7z.001 file to open 001/7z.001 file with Easy 7-Zip

001/7z.001

Extract

001/7z.001

Alternatively, Right-click on 001/7z.001 file on Windows Explorer

Extract files...

Extract Here

Extract to "folder\"

001/7z.001

Done

Easy 7-Zip Download Links:

You can try other alternative freeware that opens/extracts 001/7z.001 file on Windows. For example:

PeaZip
TUGZip
B1 Free Archiver
IZArc
Zipeg
Universal Extractor
Bandizip
FreeArc
Bitser

Open/Extract 001/7z.001 File on Mac

B1 Free Archiver opens/extracts 001/7z.001 file on Mac. B1 Free Archiver is a free software for creating archive folder and extracting archive file. B1 Archiver works on all platforms - Windows, Linux, Mac and Android. The freeware supports most popular formats including 001/7z.001.

B1 Free Archiver is compatible with:

Mac OS X 10.9 Mavericks
Mac OS X 10.8 Mountain Lion
Mac OS X 10.7 Lion
Mac OS X 10.6 Snow Leopard

Free Download B1 Free Archiver for Mac

Alternative freeware that opens/extracts 001/7z.001 file on Mac.

Keka
GUI Tar
The Unarchiver
EZ 7z
7zX

Open/Extract 001/7z.001 File on Linux

You need to install p7zip. p7zip is the Unix port of 7-Zip, a file archiver that archives with very high compression ratios. p7zip-full provides utilities to pack and unpack 7z archives within a shell or using a GUI (such as Ark, File Roller or Nautilus).

Install p7zip-full on CentOS and Fedora

# yum install p7zip-full

Install p7zip-full on Debian and Ubuntu

$ sudo apt-get install p7zip-full

You can extract/decompress 7z split archives directly, no need to concatenate the parts prior to extraction. The only requirement is that 7z split archives must have incremental extensions of the type .XXX (where X=[0..9]) starting from .001. This is probably because when you create a split archive using 7-Zip, it will name each part of the archive this way. Then, all you have to do is run the command on the first archive:

Extract 001/7z.001 file on Linux

$ 7z x sample.7z.001