Background: As some of you may already know, a small number of users (perhaps a tiny number of users) are reporting that their FireWire 400 disc burners stopped working properly after updating to Mac OS X 10.6 Snow Leopard. I have one of those burners, a circa-2001 LaCie enclosure containing a fairly new Pioneer DVD burner.
I posted an initial message on September 4 describing what I had observed and what I had learned from Apple tech support . I posted a followup on September 11 stating that the Mac OS X 10.6.1 update did not fix anything. I copied the followup to several sites, and it propagated to several more.
Subsequently I called LaCie tech support and learned that they were aware that their old enclosures did not play well with Snow Leopard, but that some were "fixed" with the 10.6.1 update.
On Sunday I received an anonymous reply on my blog with THE SOLUTION. But first a warning: Kids, don't try this at home without adult supervision. This hack requires a file to be transplanted into your System folder hierarchy.. Going into your System folder is a BAD THING! In other words, be very careful. I am purposely not giving any more detailed information than the anonymous poster did. If you're not confident in what to do, step away from your Mac NOW!
Date: September 20, 2009 9:39:44 PM PDT
Subject: [North Curry County Macintosh Users] New comment on Followup: Snow Leopard Hates FireWire 400.
Anonymous has left a new comment on your post "Followup: Snow Leopard Hates FireWire 400":
If you replace the extension
with the one from 10.5 you should have no problem. One caveat, you MUST repair permissions BEFORE restarting or you may have a problem with the replacement extension being recognized. This could be a problem even if you repair permissions after restarting.
Posted by Anonymous to North Curry County Macintosh Users at September 20, 2009 9:39 PM