They don't work even when I just grabbed the kext out of the sonnet installer package..
Suddenly the AS media cards of which I have 2 decided to start working..All this drama you'd think I'd just break down and buy the sonnet.
The x86 PC-SiI3112 cards don't work in the late 2005 G5 models, apparently the SeriTek and Sonnet cards do, but I've never got the chance to buy one. However, I managed to purchase a Tempo SATA E4i for 50 last week. That's basically the way to go regarding storage expandability in the PCIe G5s. There have been some Highpoint RocketRAID PCIe cards which initially supported OSX, but it wasn't really stable so they got pulled.
not sure about being bootable, i only ever looked into it to add storage to my server when it ran on a g4 (not a mdd, but it came up in discussion that it should work in a mdd)
just hold the option key to find out what is bootable..
SiL tends not to be bootable in OSX