Boot iso from iscsi

[dot1y]

Hello,

First of all I'd like to thank the developers for this great tool, it helped me a lot, so keep up the good work !
Now, for the dilemma:
I'd like to boot an iso file from an iscsi target. I'm using Microsoft iscsi target 3.3 on Windows Server 2008. The iscsi target is accessible, I've tested it on another computer and I can see the iso file. However, when I run sanboot iscsi:server-ip::::iqn.1991-05.com.microsoft:test I get the following messages:

Registered SAN device 0x80
Booting from SAN device 0x80
Boot fron SAN device 0x80 failed: Operation canceled (http://ipxe/org/0b8080a0)
Do I need to specify the iso file somehow ?
And another thing:
If the iso file is Hiren's Boot CD 15.2, what's the best way of loading it so that every entry in the menu is functional ?
I've tried using grldr, it takes a lot of time, sanboot from apache server, but only a couple of things are working, memdisk, that also takes a lot of time.
Any help would be appreciated.