Ok, thanks @URfog that put me on the right track. My fog web server is not a storage node. I added it to the list of storage nodes with a max clients of 0 and I can boot normally now.

Yes, thank you for the link. I found a couple of issues with one of my storage servers, so I think this may be the problem.

Server

• FOG Version: 1.4.0-RC-3
• OS: Ubuntu 16.04.2

Client

• Service Version:
• OS:

Description

My Dell Optiplex 360’s won’t boot using undionly.kpxe. My setup has worked great for quite a while, but my update today broke it.

Error looks like:

http://fog.ip.add.here/fog/service/ipxe/boot.php… Input/output error (http://ipxe.org/1d0c6539)
Could not boot: Input/output error (http://ipxe.org/1d0c6539)

PS - I love the fog project. Thanks!