winpe hangs with sanhook

[andy_s]

I'm trying to install Windows 7 on diskless workstation with iSCSI.
My boot.ipxe looks like:

Quote:#!ipxe

set keep-san 1
sanhook --drive 0x80 iscsi:192.168.1.100::::iqn.2013-03.local.galend:win7
cpuid --ext 29 && set arch amd64 || set arch x86
kernel wimboot
initrd ${arch}/iso/bootmgr bootmgr
initrd ${arch}/iso/boot/bcd BCD
initrd ${arch}/iso/boot/boot.sdi boot.sdi
initrd ${arch}/winpe.wim boot.wim
boot

During the boot it shows that disk 0x80 is connected, and than winpe hangs. In safe mode (with F8) it proceeds loading modules till disk.sys, and after 2-3 minutes goes black screen. If I change disk number to 0x81, I get error with \Boot\BCD status 0xc000000e.
If I comment out sanhook, winpe boots OK with network functional.