Mac OS X 10.3.3: USB device, FireWire device, RAID card or SCSI card doesn‘t work after updating to 10.3.3

If a USB or FireWire device, RAID PCI card, or SCSI PCI card does not work after installing the 10.3.3 Update (on Mac OS X or Mac OS X Server), then you can resolve the issue by updating to 10.3.4.
This article has been archived and is no longer updated by Apple.
Symptoms you might see on an affected system include:
  • External or internal SCSI devices that are not recognized.
  • USB or FireWire disks (or devices with file systems) do not mount.
  • If the startup volume is on a SCSI drive, the computer may stop responding ("hang") during startup.
  • Apple System Profiler may recognize some devices that are not recognized elsewhere in the system.


If the affected computer can start up, update to Mac OS X or Mac OS X Server 10.3.4.

If the the computer won't start up, try using Safe Mode to update to 10.3.4. If it still won't start, these are some tips you can follow.
Published Date: Oct 7, 2016