Can't install ESXI 5.1 and 5.5 on DL585 G7

[robinsmidsrod]

Try to follow the instructions on https://gist.github.com/robinsmidsrod/2769396 to boot ESXi directly from iPXE without mboot.c32. Also take note of the instructions on http://ipxe.org/appnote/xenserver showing how you can specify arguments to each individual module (which is separated with --- in your example). Be aware that iPXE doesn't support decompression of modules, so you might need to manually do that to make it work.