This article has been archived and is no longer updated.
When NetBooting some Apple hardware you may be presented with a 'No Entry' symbol. The NetBoot set may work fine on other Apple hardware. The reason for this is TFTP file size limits within the Apple EFI Firmware, see below table:
| Model | 35.5MB Support | 31.1MB Support |
| iMac 21.5-inch, Mid 2011 | No | Yes |
| iMac 24-inch, Early 2009 | Yes | Yes |
| Mac Pro Early 2008 | Yes | Yes |
| Mac Pro Late 2013 | Yes | Yes |
| MacBook Pro 13-inch, Mid 2009 | Yes | Yes |
| MacBook Pro 13-inch, Mid 2012 | No | Yes |
| MacBook Pro 15-inch, Mid 2009 | Yes | Yes |
| MacBook Pro 15-inch, Mid 2010 | No | Yes |
| MacBook Pro Retina, 15-inch, Late 2013 | Yes | Yes |
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