MacBook Pro Late 2011 Prohibitory sign at Netboot

[ndudley]

Hi!

I have recently stumbled upon an issue with netbooting older MBP's to my latest 10.9 NBI. Every time I try to boot I get the prohibitory symbol. I can't figure it out and it is driving me insane. I have tried the following:

Making sure the NBI has no spaces in the name
Deleted some Kernel Extensions to make the kernelcache < 35 mb
Set the NBI as default

I really want to try and have a universal NBI for my helpdesk folks, but if this cant be done, I understand. Just wanted to know if anyone has seen this problem?

Also, I used the System Image Utility Tool to build the NBI

[kilodelta]

My initial thought would be to turn on verbose boot and see if you can discern *why* it's not booting via the onscreen output:

sudo nvram boot-args="-v"

Obviously, you'd need access to a recovery partition or bootable OS to execute that.

Additionally, what build of Mac OS X is your NBI? Some builds only play nice with specific hardware, which can make having a 'universal build' difficult. It's doable in many cases, but often requires a good bit of work and pain, in my experience.

[jimlee]

disregard. Didn't read subject.

[ndudley · Accepted solution]

These two links helped solved the problem:
https://jamfnation.jamfsoftware.com/discussion.html?id=9836
http://blog.designed79.co.uk/?p=1807