Unsigned (Legacy) Extensions in El Capitan?
Running an iMac 21.5-inch (Mid-2011) with 2.5GHz Intel Core i5, 4GB DDR3 1333MHz, 500GB Internal HD, (2) 3TB Thunderbolt External Drives, (1) 1.5TB FireWire800 External Drive, M-Audio FireWire 410 at the end of the FireWire800 Bus and now not loading drivers.
Extensions (from System Report) states the following:
M-AudioFireWireBeBoB:
Version: 1.10.2
Last Modified: 7/28/11, 2:27 PM
Bundle ID: com.m-audio.driver.firewire
Loaded: No
Obtained from: Not Signed
Kind: Universal
Architectures: i386, ppc, x86_64
64-Bit (Intel): Yes
Location: /System/Library/Extensions/M-AudioFireWireBeBoB.kext
Kext Version: 1.10.2
Loadable: No
Signature Validation Errors: Not Signed
Dependencies: Satisfied
Signed by: Not Signed
Until I installed El Capitan, the M-Audio FireWire 410 worked perfectly. I don't remember having to use the bypass (sudo nvram boot-args="kext-dev-mode=1) for unsigned extensions in Yosemite. I just read the bypass may be completely disabled in El Capitan. Is there an alternative?
I realize this is "legacy" equipment, but most of my digital music equipment is, as it is too expensive to replace. The manufacturer isn't going to spend time on signed drivers for this older equipment. Before I start considering a replacement, which will take a lot of research to factor in the manufacturer's record for providing signed drivers for Mac OS X, is there any way to get El Capitan to permit this one extension to load?
iMac, OS X El Capitan (10.11), 21.5-inch (Mid-2011) 4GB RAM