Download 7-Zip 9.17 Beta

The developers of 7-Zip released a new beta release of their eponymous archiving program on Monday. Last year it was decided to use the year of release as the main issue, but in this and the previous release it seems to have deviated from this again. 7-Zip can handle a variety of compression formats, including zip, cab, rar, arj, lzh, chm, gzip, bzip2, z, tar, cpio, rpm, deb, and of course the proprietary 7z. Furthermore, the software is capable of opening iso files and Nsis installation packages. The program is available for Windows, in both 32-bit and 64-bit versions. This release addresses the disk defragmentation problem that arises when creating zip archives.

what’s new:

• Disk fragmentation problem for ZIP archives created by 7-Zip was fixed.

Notes: 7-Zip now uses 4 MB RAM buffer as file cache, when you create ZIP archives. It reduces the number of Move_File_Position and Write_to_File operations.

To ensure that new code works correctly please try to create .ZIP archives for big number of files. And then call “Test” command for these ZIP archives.

Try two modes:

Also now you can see the number of file fragments on NTFS partitions with the following way:

or from command line:
7z l \\.\c: -slt dir1\dir2\filename

The following downloads are available:
7-Zip 9.17 beta (32bit)
7-Zip 9.17 beta (64bit)