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21. Mac OS X FAQ<br />
21.1 Round about Driver Installation<br />
The driver with the file suffix gz provided by <strong>RME</strong> is a compressed TAR archive. TAR bundles<br />
multiple files and folders into one file, but does not save memory space nor download time.<br />
Both TAR and gz are supported natively by OS X, a double click on the file is all you need to<br />
do.<br />
Older browsers do not recognize gz as an archive, loading the file as a document. This results<br />
in a cryptic looking text within the browser window. Downloading the file can be done via the<br />
right mouse key, Save Target as. Despite this procedure, some older browsers like Netscape<br />
4.78 will not save the file correctly - the archive will be corrupted.<br />
The driver consists of a package file (pkg), which contains various folders and files, similar to<br />
TAR. A double click will start the OS X installer. To save you the hassle of installing both audio<br />
and MIDI drivers separately, the H<strong>DSP</strong> driver contains an additional meta package (mpkg),<br />
that points to the single packages. Those single packages are not shown in the Finder, as they<br />
reside within the invisible folder '.contained_packages'. Only the mpkg is visible. Important: an<br />
installation can only be done with the complete folder. If only the mpkg is copied to a different<br />
place, it will not find the single driver packages!<br />
The actual audio driver appears as a kernel extension file. The installer copies it to ><strong>System</strong>/<br />
Library/ ExtensionsLibrary/ Audio/ MIDI<br />
Drivers
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