You need "sudo" to modify nvram. You must reboot after setting nvram, to let the changes take effect. On the target: sudo nvram boot-args="debug=0x146 kdp_match_name=firewire fwkdp=0x8000" sudo shutdown -r now fwkdp lldb (lldb) kdp-remote localhost fwkdp acts as a redirector of packets, making it appear as if your host has panicked, then sending all the packets via firewire to the target. debug=0x8146 changes the NMI key from Left-⌘ + Right-⌘ + Power to the Power button alone. That's the 0x8000 bit debug=0x145 halts at early boot. That's the 0x1 bit. If those aren't working, you haven't properly set boot-args on the target machine. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.... This email sent to site_archiver@lists.apple.com