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Mac OS X 10.4: SCSI Issues: Fix for Adaptec cards

Category: How to , Mac OS X , scsi
Composed by: OxYGeN
On: 2023-02-25 17:02:41

Adaptec SCSI fix 

Several users have reported issues with Adaptec SCSI cards after updating to Mac OS X 10.4, including an inability to recognize SCSI devices, problems starting up or shutting down with the card installed, and more.

A workaround, successful for many users, involves removing the following files from the /System/Library/Extensions folder:

  • Adaptec 290X-2930.kext
  • Adaptec 29160x.kext
  • Adaptec 39160x.kext

but leaving the file

  • Adaptec 78XXSCSI.kext

in place, then restarting.

 

n.b. Before deleting the .kext files, copy them first to another folder as backup.

 

MacintoshRepository member OxYGeN:

" I had issues detecting my external SyDOS88e drive. I'm running Mac OS X 10.4.11 on a G4 Powermac. Above instruction solved it and the OS was able to detect the devices that was connected to the parallel SCSI port on the SCSI Adaptec PCI card. "

 

MacFixIt reader Steve Morris writes:

"I left Adaptec78XXSCSI.kext as the only SCSI Adaptec driver (had the newest date) and that restored my 2906 card and scanner. Also now when I look in system profiler, I see one UMAX Scanner in the Parallel SCSI device tree not multiples I had seen before."

 

source: CNET