Panic cpu 0 caller

[GiuGiu]

I installed chimera as a bootloader, but when I start the hd with el capitan me from this error even if I insert the usual boot flag (-v dart=0 nv_disable=1 kext-dev-mod=1 -x -x cpus=1): panic cpu 0 caller 0xffffff800031caa6
How do you solve?