[jenjac]

You have to use the “kernelcache” file in the i386 folder in place of the mach.macosx file. You also have to replace the “–kernel” option with “–kernelcache”.

Here is the modified command:

sudo bless –netboot –booter tftp://server.apple.edu/NetBoot/NetBootSP0/NetInstall.nbi/i386/booter \
–kernelcache tftp://server.apple.edu/NetBoot/NetBootSP0/NetInstall.nbi/i386/kernelcache –options \ “rp=nfs:server.apple.edu:/private/tftpboot/NetBoot/NetBootSP0:NetInstall.nbi/NetInstall-Restore.dmg”

This “–kernelcache” option is only available from the bless command in Lion. To boot a Snow Leopard client to the NetInstall set I had to first mount an image of a Lion installation, and then use the bless command from that image.

Here is the command for that:

sudo /Volumes/Mac\ OS\ X\ Lion/usr/sbin/bless \
–netboot –booter tftp://server.apple.edu/NetBoot/NetBootSP0/NetInstall.nbi/i386/booter \
–kernelcache tftp://server.apple.edu/NetBoot/NetBootSP0/NetInstall.nbi/i386/kernelcache –options \ “rp=nfs:server.apple.edu:/private/tftpboot/NetBoot/NetBootSP0:NetInstall.nbi/NetInstall-Restore.dmg”

If anyone has any way to boot to a Lion NetInstall from Snow Leopard without mounting a Lion image for the new bless command, please tell me how you did it.

Thanks!

[Author]

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