X-Git-Url: http://git.osdn.jp/view?a=blobdiff_plain;f=www.7-zip.org%2Ffaq.html;h=0e7c0398a9a48cf358a88910be20b4f7b6e43f53;hb=18fa92d1dfb04b10182afabb0f874cc8fef0cbfe;hp=315e5eadc7a5ebccd6e5e6814abf4af36594d228;hpb=ce43527f08ddea3ac865f5744ba2acad6a561ba7;p=sevenzip%2F7-Zip.git diff --git a/www.7-zip.org/faq.html b/www.7-zip.org/faq.html index 315e5ea..0e7c039 100644 --- a/www.7-zip.org/faq.html +++ b/www.7-zip.org/faq.html @@ -22,25 +22,20 @@ - - -

7-Zip at SourceForge.net

English
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Chinese Simpl.
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+Esperanto
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- @@ -62,18 +57,38 @@ register or pay for 7-Zip.

Right-click the icon of 7-Zip File Manager, and then click Run as administrator. Then you can change file associations and some other options.

-

What version of 7-Zip is more stable?

-

Now there one main version of 7-Zip:

+

Why 7z archives created by new version of 7-Zip can be larger than archives created by old version of 7-Zip?

+ +

New versions of 7-Zip (starting from version 15.06) use another file sorting +order by default for solid 7z archives.

+ +

Old version of 7-Zip (before version 15.06) used file sorting "by type" ("by extension").

+

New version of 7-Zip supports two sorting orders:

+ + +

You can get big difference in compression ratio for different sorting methods, +if dictionary size is smaller than total size of files. +If there are similar files in different folders, the sorting "by type" can provide +better compression ratio in some cases.

+ +

Note that sorting "by type" has some drawbacks. +For example, NTFS volumes use sorting order "by name", so if an archive uses +another sorting, then the speed of some operations for files with unusual order +can fall on HDD devices (HDDs have low speed for "seek" operations).

+ +

You can increase compression ratio with the following methods:

-

Latest beta versions can fix some bugs of previous versions. -So they can be more stable in some cases. -In general it's safe to use latest beta version.

-

Why do the add, delete and update operations not work for some existing archives?

-

These operations didn't work only in old versions of 7-Zip. -Latest 7-Zip supports any operations with "solid" archives.

+

If you think that unusual file order is not problem for you, +and if better compression ratio with small dictionary is more important for you, +use 'qs' mode.

Why can't 7-Zip open some ZIP archives?

In 99% of these cases it means that the archive contains incorrect headers. @@ -86,6 +101,10 @@ of that program that their software is not ZIP-compatible.

There are also some ZIP archives that were encoded with methods unsupported by 7-Zip, for example, WAVPack (WinZip).

+

Why can't 7-Zip open some RAR archives?

+

7-Zip 9.20 supports RAR 2/3/4 formats only and doesn't support RAR5 archives. +But latest versions of 7-Zip supports RAR5 archives.

+

Why does drag-and-drop archive extraction from 7-Zip to Explorer use temp files?

7-Zip doesn't know folder path of drop target. Only Windows Explorer knows exact drop target. @@ -134,11 +153,25 @@ So you can use any dictionary in Windows x64, if you have required amount of phy

How can I install 7-Zip in silent mode?

For exe installer: Use the "/S" parameter to do a silent installation and the "/D=dir" parameter -to specify the "output directory". These options are case-sensitive. -7-Zip uses the NSIS installer by Nullsoft.

+to specify the "output directory". These options are case-sensitive.

For msi installer: Use the /q INSTALLDIR="C:\Program Files\7-Zip" parameters.

+ +

How can I recover corrupted 7z archive?

+ +

There are some possible cases when archive is corrupted: +

+ +

It's possible to recover some data. Read about recovering procedure: + +

Recover corrupted 7z archive

+ +

Developer FAQ

Why are there linking errors when I compile 7-Zip or LZMA SDK with Visual C++ 6.0?

@@ -190,7 +223,7 @@ under a more liberal license.


-

Copyright (C) 2011 Igor Pavlov.

+

Copyright (C) 2018 Igor Pavlov. The site is hosted at Digital Ocean