Is there an ATTO scsi driver for El Capitan?
I just upgraded to El Capitan. Now my older scsi card is not seen by my Mac Pro G5. I installed the ATTO driver but it's NG.
Mac Pro, OS X El Capitan (10.11.4)
Just to clarify, you don't have a G5 anything. The G5 was the last PowerPC CPU Apple used before switching to Intel. As a tower model, that would have been a PowerMac.
Anywho, the driver has most likely been disabled by El Capitan's System Integrity Protection. It's to prevent unsigned apps access to the System folder, or from injected rogue code into the apps installed by OS X.
You may be able to get it working again. This trick has helped with some .kext drivers that install to the System folder.
Restart and hold down the Command+R keys to boot into Recovery Mode. You can also start up to a flash drive you have created a bootable full installer of El Capitan on. Launch Terminal from the Utilities menu. Enter the command:
csrutil disable
Close Terminal and restart normally.
Install your ATTO drivers.
Startup into Recovery Mode again. Only this time in Terminal, enter:
csrutil enable
Then once again restart normally.