.TP
\fB--unix-data\fR
(UNIX-like systems only) Store the UNIX owner, group, and mode of all captured
-files. This is done by adding a special alternate data stream to each directory
-entry that contains this information. Please note that this flag is for
-convenience only, in case you want to use \fB@IMAGEX_PROGNAME@\fR to archive
-files on UNIX. Microsoft's software will not understand this special
-information.
+files. This is done by adding a special tagged metadata item to each directory
+entry that contains this information. This information should be ignored by the
+Microsoft implementation. (Note: the way that UNIX data is stored was changed
+in wimlib v1.7.0 and is not backwards or forward compatible.)
.TP
\fB--no-acls\fR
Do not capture files' security descriptors.
pointing out that Windows' own default filesystem, NTFS, supports these
characters, although Windows does not!)
.IP \[bu]
-WIMs captured with \fB--unix-data\fR should be assumed to be incompatible with
-Microsoft's software. However, the UNIX data format used in wimlib v1.6.3 and
-later uses reserved fields in the WIM dentries which seem to be ignored by the
-Microsoft implementation as of Windows 8.1.
-.IP \[bu]
Pipable WIMs are incompatible with Microsoft's software. Pipable WIMs are
created only if \fIWIMFILE\fR was specified as "-" (standard output) or if
the \fB--pipable\fR flag was specified.