bootable flash drive to run NetBoot for a segmented network.

teckieadmin
teckieadmin used Ask the Experts™
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Is there a way to create a boot image (CD/USB) that can run the bless command on a mac to initiate netboot?

We have a segmented network and our servers are in one segment and the systems that are being imaged are in another. We can boot up using a FireWire drive with OS X on it and do the command that way but we are deploying mass amounts of systems from a factory state and want to streamline this process until our network team configures things as such that NetBoot will work across segments.
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Commented:
Netboot relies on bootp from a dhcp server. Without the bootp protocol allowed/routable from netboot server to clients you are unable to initiate a netboot process. It is as simple as allowing the required ports and adding an IP helper address for the netboot server. For a Cisco switch:

conf t
int vlan x
ip helper-address x.x.x.x

An alternative would be to install an operating system image from a bootable network drive. I use deploy studio (www.deploystudio.com). This is installable on both a server and an external drive.

Another alternative would be to prepare a reference machine, and clone the disk using carbon copy cloner or equivalent. Then target mode each client via firewire and copy the system back to each client.

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Commented:
We are getting ready to deploy over 70 machines and firewire is not ideal. We have a working solution using Casper Suite that takes 8 minutes but our network team is not very fast or willing at this point and unfortunately my deadline can not change until they do that leaving me few choices. If I do not find a solution by Tuesday I will have to setup my own NetBoot server locally as a temporary solution.

Thanks because you are dead on. We are just needing a light weight bootable option that will force the bless command on to the computer as an interim process.
I have found a solution for what I was looking for. It provides a way to bless a computer with a removable media.

https://www.wiki.ed.ac.uk/display/DSwiki/Creating+EFI+bootable+CD+for+Apple+Hardware

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