From Dell:
Oct 14, 2016 I have LSI 9261-8i raid controller in Mac Pro 1.1 with El Capitan. By entering the Recovery HD I f ollowed the procedure of driver signing off. As a result I have the card not detected. I couldn't rebuild kernel caches, and when booting from another (not raid card partition) disk operations (repair, etc) on the raid partition would fail. As i said before; it's quite simple to explain it in a generic way. Attached is a version compiled for Mac OS X 10.6.8 running a 64 bit kernel. Clone my OSX drive to the LSI Raid.
Lsi Raid Controller
Click on the following links for the driver package readme info:
.../extract/Readme.txt
This package supports the following driver models:
- RAID Virtual Device
- RAID Controller Component Device
- DELL PERC 2/DC SCSI Processor Device
- DELL PERC 2/SC SCSI Processor Device
- DELL PERC 3/DC SCSI Processor Device
- DELL PERC 3/QC SCSI Processor Device
- DELL PERC 4/Di SCSI Processor Device
- DELL PERC 4/DC SCSI Processor Device
- DELL PERC 4e/DC SCSI Processor Device
- Dell PERC 2/SC RAID Controller
- Dell PERC 2/DC RAID Controller
- Dell PERC 3/QC RAID Controller
- DELL PERC 3/DC & PERC 3/DCL RAID Controller
- DELL CERC ATA 100/4ch RAID Controller
- DELL PERC 3/SC RAID Controller
- DELL PERC 4/Di RAID On Motherboard Driver
- DELL PERC 4/DC RAID Controller
- DELL PERC 4/SC RAID Controller
- DELL PERC 4e/Si RAID Controller
- DELL PERC 4e/Di RAID Controller
- DELL PERC 4e/DC RAID Controller
- DELL PERC 4e/SC RAID Controller