From: Eric Biggers Date: Mon, 31 Dec 2012 22:42:44 +0000 (-0600) Subject: imagex-optimize.1.in: Note compression ratio X-Git-Tag: v1.2.3~13 X-Git-Url: https://wimlib.net/git/?p=wimlib;a=commitdiff_plain;h=1a2e4e047d065487c97c24791dafe91b79289b26 imagex-optimize.1.in: Note compression ratio --- diff --git a/doc/imagex-optimize.1.in b/doc/imagex-optimize.1.in index a229ec7b..bcbcd823 100644 --- a/doc/imagex-optimize.1.in +++ b/doc/imagex-optimize.1.in @@ -20,15 +20,21 @@ In addition, some errors in the original WIM may be fixed by re-writing it When reading \fIWIMFILE\fR, verify its integrity if the integrity table is present; in addition, include an integrity table in the optimized WIM. If this option is not specified, no integrity table is included in the optimized WIM, -even if there was one before. +even if there was one in the original WIM. .TP 6 \fB--recompress\fR Recompress all compressed streams in \fIWIMFILE\fR when rebuilding it. This -will increase the time needed to rebuild the WIM,unless the WIM is uncompressed, -but it may result in a better compression ratio if wimlib can do a better job -than the program that wrote the original file. A side effect of this is that -every stream in the original WIM will be checksummed, so this can help verify -that the WIM is intact (equivalent to applying all the images from it). +will increase the time needed to rebuild the WIM, unless the WIM is +uncompressed, but it may result in a better compression ratio if wimlib can do a +better job than the program that wrote the original file. A side effect of this +is that every stream in the original WIM will be checksummed, so this can help +verify that the WIM is intact (equivalent to applying all the images from it). + +Note: as mentioned in the README, wimlib generally provides a slightly better +XPRESS compression ratio than Microsoft's software, while it generally provides +a slightly worse LZX compression ratio than Microsoft's software. So, you may +not want to specify \fB--recompress\fR when optimizing a LZX-compressed WIM +created on Windows. .SH NOTES