Unable to Netboot Late 2015 27" iMACs.

mrperrott
New Contributor

Hello,

I am unable to Netboot Late 2015 27" iMACs. We are using the 10.11 version of the netboot image. We can Netboot all other models that we have except this particular model. When we attempt to Netboot we get this prohibitory symbol.
b1624a19f8c64bb49ddfc5b8c3ab56a6

Do we need to upgrade the Netboot image for this model or is there something else that needs to be done?

Thank you in advance.

1 ACCEPTED SOLUTION

htse
Contributor III

The NetBoot image based on at least OS X 10.11.1 Build 15B42 in order to NetBoot the hardware from in an iMac 27-inch from Late 2015.

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4 REPLIES 4

ddribeiro
New Contributor

Check what build of 10.11 you are using. The iMac (Late 2015) models use 10.11 build 15A4310, which is unique to that model. If you update your NetBoot image to 10.11.1 or later, it should work on all current Mac hardware.

htse
Contributor III

The NetBoot image based on at least OS X 10.11.1 Build 15B42 in order to NetBoot the hardware from in an iMac 27-inch from Late 2015.

Michael_Meyers
Contributor

I would create a NetBoot image from 10.11.4. That should catch most everything that is out now.

mrperrott
New Contributor

Thank you all for your help. I have updated the Netboot image and we're back in business.