If you have such archive, please don't call the 7-Zip developers about it. Other ZIP programs can open some archives with incorrect headers, since these programs In 99% of these cases it means that the archive contains incorrect headers. If you think that unusual file order is not problem for you,Īnd if better compression ratio with small dictionary is more important for you, Specify ' qs' in Parameters field (or use -mqs switch for command line version).You can increase compression ratio with the following methods: Note that sorting "by type" has some drawbacks.įor example, NTFS volumes use sorting order "by name", so if an archive usesĪnother sorting, then the speed of some operations for files with unusual orderĬan fall on HDD devices (HDDs have low speed for "seek" operations). If there are similar files in different folders, the sorting "by type" can provide If dictionary size is smaller than total size of files. You can get big difference in compression ratio for different sorting methods, (or -mqs switch for command line version).
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