Cannot boot from menu.c32 with ipxe.krn

[errorsmith]

Hi!

I have a Client with an older Realtek 100Mbit Card. I use the provided CDROM Image to boot into ipxe. When my dhcp/tftpd delivers this ipxe script:

Code:

#!ipxe
ifopen net0
dhcp net0
set keep-san 1
sanhook --drive 0x80 iscsi:192.168.23.1::::iqn.2011-12.my.iscsi.host:disk1
sanboot --drive 0x80

the machine loads the iscsi installed win7 and all is fine.

When I try to do this:
chain into menu.c32 -> select option "sanboot" -> chain into ipxe.krn
and provide as initrd the same script as above, the machine locks up with some random garbage at the lower half of the screen.

Can anyone point me what I'm doing wrong?

with kind regards,
errorsmith

edit: typo