Booting Pmagic iso

[tbaror]

Hello ,

I am trying to boot PMagic from iso but i get
[undefined=undefined]searching for PMAGIC_2014_04_28.SQFS[/undefined]

and finally failed
my code is as follows

Code:

:PMAGIC
sanboot http://${fog-ip}/${fog-webroot}/service//ipxe/PMagic/pmagic_2014_04_28.iso
goto MENU

I also tried

Code:

:PMAGIC
initrd http://${fog-ip}/${fog-webroot}/service//ipxe/PMagic/pmagic_2014_04_28.iso
chain memdisk iso raw ||
goto MENU

any idea how to make it work ?
Please advice
Thanks