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Check SCSI termination to fix CD-R problems System
I spent hours trying to figure out why my Spressa CRX-145S CD-RW, connected to an Adaptec 2609 card on my G4 running 10.1.5, was not being seen by the system, when everything worked fine on System 9.2.2. I tried all of the software fixes on the net, and nothing worked (except once after all of the software fixes listed below, until I rebooted).

Turns out the problem was that I didn't have a SCSI terminator on the open port of the CRX-145S! I didn't need one with 9.2.2, but apparently OS X is pickier about this. I snapped one on and now the system sees it, and I'm happily burning away!

Of course, you might also need to do some of the software fixes that I found listed here on macosxhints, summarized in jonsaw's comment (near the bottom of the comments) to this hint. I did all of the following (but try the SCSI terminator first, if applicable):
  • Installed Lebsack's patched kext.
  • Deleted the file '/System -> Library -> Extensions.mkext' -- in the Terminal, type:
     % sudo rm /System/Library/Extensions.mkext
    After that, restart.
  • Reinstalled my Adaptec SCSI card driver.
  • Installed iTunes 3.
Nothing worked until I added the terminator.
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Please Verify!
Authored by: germ on Oct 07, '02 04:32:07PM

Are you sure this REALLY works? By this I mean not only that the burner shows up and you can burn, but also that you can VERIFY the disc with Toast. I have a 2906 SCSI board and have NEVER been able to burn properly with any version of X (works perfectly in 9). Please let us know....



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SCSI termination
Authored by: hamish on Oct 11, '02 02:33:32PM

I have found that the "Adaptec 290X-2930.kxt" extension in System>Library>Extensions would not work with my ORB drive. With every update it would be re-installed and I would put it into an "Untitled" folder and the ORB would mount and behave normally. I found two updates at Adaptec and neither would work. It's not difficult to "lose" it so I don't check the Adaptec web site any more. This also may work for you.



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