Update nvidia driver
With the l'asta update I've the same problem too....how did you update nvidia drivers if we cannot reach OS X? The system doesn't boot.....can you explain how u did?
rbbunmc we need your help again...
Boot with nv_disabile=1
Then open system preference and update nvidia driver....if the new version is ready.
Usually a security update change the system build version so the nvidia driver won't boot without being updated according to the new build number (check in about this Mac)
Before coming back to my clone made with Carbon Copy Cloner i want to solve the problem...i tried to change bootflags to -x -v -f npci=0x2000 nv_disable=1 kext-dev-mode=1 but everytime the system reach PCIConfiguration begin it reboots...so i've no chance to reach GUI and update nvidia web drivers....Try with -x -s -f
I tried these things too and they didn't work.
I tried the nv_disable=1
Then I tried adding -x -v -f (I also tried the -s even though I think that's a typo)
If I try to boot normally it will go to the apple loading screen but restart when it's about 1/6 of the way loaded.
If I do any of the bootflags it goes through that screen where it load a bunch of stuff (I don't know what it's called). And stops at various points depending on which bootflags I enabled.