iPXE boot iscsi Win 7 BSOD

[robinsmidsrod]

That looks right to me. You don't need the initrd line with bootmgr anymore, though, as of wimboot 2.4.0 (which is the highly recommended version to use).

If you use the Intel VNIC in VirtualBox the drivers for that network card should be on the default Win7 install media. If you use one of the other VNICs then you might have problems. I don't think the virt-io VNIC is supported by Windows 7 by default. 0x7B is INACCESSIBLE_BOOT_DEVICE, right?

I think you also need to set netX/gateway X.X.X.X, not set gateway X.X.X.X for it to be passed over to the iBFT correctly, and "set keep-san 1" is not needed anymore.

If none of this works you might have an issue with ACL on your iSCSI target, and Windows usually has another initiator-iqn setup by default which is preventing you from connecting. Try to do a packet trace and see where things stop. See http://ipxe.org/howto/pcap for details on how to do that.