hahahaha, Apple never learn do they :)

I've reported this issue with building 10.11.4 and higher Netboot images to AppleCare. I have not tried a 10.12 image yet. They are aware and haven't committed to anything.

If I create a NetRestore image using SUI, that creates a properly sized kernel cache. I copy that into my Netboot.nbi and then I am able to netboot older hardware. Another resource for obtaining a properly sized kernel cache has been to take one created by AutoCasperNBI. I suspect this will work until it doesn't. ;)

AutoCasperNBI actually uses the kernelcache reduction that was needed for 10.9.3... I just left it in & it seems to resolve this issue.

Yeap autocaspernbi works as does my old scrips for kernelcache reduction.

Hi,

Thanks for that -

1) I tried replacing the kernelcache file created by SIU for a NetBoot image with that created by SIU for a NetRestore image and that was just plain sad - it does go past the small spinny globe stage but then ends finally in a stage where there is a gear wheel which keeps coming and going.
2) I also tried replacing the kernelcache file created by SIU for a NetBoot image with that created by AutoCasperNBI and whilst that got to the progress bar under the Apple logo stage (so almost all the way) it looks to have stopped at the end of the progress bar.

I'll give AutoCasperNBI it's head and use that next week and see where that gets me using it alone without a frankenNBI

Regards,

David

@dlondon cool. Report back please.

With ACNBI, I should be able to help further with the boot process if needed.

@Lotusshaney oh no surprise that your script & ACNBI works, pretty sure the method in ACNBI was from your scripts. :)