Mac Os X Faq; Round About Driver Installation; Repairing Disk Permissions; Midi Doesn't Work - RME Audio Hammerfall HDSPe RayDAT User Manual

In practice, SyncCheck provides the user with an easy way of checking whether all digital de-
vices connected to the system are properly configured. With SyncCheck, finally anyone can
master this common source of error, previously one of the most complex issues in the digital
studio world.
Thanks to its AutoSync technique and lightning fast PLLs, the HDSP is not only capable of han-
dling standard frequencies, but also any sample rate between 28 and 200 kHz.

20. Mac OS X FAQ

20.1 Round about Driver Installation

The driver consists of a package file (pkg). A double click will start the OS X installer.
The actual audio driver appears as a kernel extension file. The installer copies it to >System/
Library/ Extensions<. Its name is HDSP.kext. It is visible in the Finder, allowing you to verify
date and driver version. Yet, in fact this again is a folder containing subdirectories and files.
Nonetheless, this 'driver file' can be removed by simply dragging it to the trash bin. This can be
helpful in case a driver installation fails. An incomplete installation is not always recognized: The
installation routine does not open a message window with a note about a restart of the com-
puter. This indicates that the driver file was not copied and the driver was not installed!
Several users have observed that the installation routine occasionally stops and no longer
works correctly. This can be fixed by removing the corresponding extension file prior to installa-
tion. In some cases, also (or only) a repair of the disk permission will help.
We have also received reports saying the driver update could not be installed on the system
disk - shown red crossed during the installation. Repairing permission may also help here. If
not, we're sorry, but have to recommend to contact Apple. Our driver has no knowledge of fold-
ers, disks etc., the installation is handled completely by the OS X installer.

20.2 Repairing Disk Permissions

Repairing permission can solve problems with the installation process - plus many others. To do
this, launch Disk Utility located in Utilities. Select your system drive in the drive/volume list to
the left. The First Aid tab to the right now allows you to check and repair disk permissions.

20.3 MIDI doesn't work

In some cases MIDI does not work after the installation of the HDSP driver. To be precise, ap-
plications do not show an installed MIDI port. The reason for this is usually visible within the
Audio MIDI Setup. It displays no RME MIDI device, or the device is greyed out and therefore
inactive. Mostly, removing the greyed out device and searching for MIDI devices again will solve
the problem. If this does not help, we recommend manual removal of the MIDI driver and rein-
stallation of the complete driver. Otherwise repairing permissions may help.
The HDSP MIDI driver is a plugin. During installation it will be copied to >Library/ Audio/ MIDI
Drivers<. Its name is HDSP MADI MIDI.plugin. The file can be displayed in the Finder and
also be removed by simply dragging it to the trash bin.
User's Guide HDSPe RayDAT © RME
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