iPXE -- Windows 8.1 installation (fail)

[Andromeda_x]

Hello,

I've attempted to run Windows 8.1 installation in diskless test computer which did fail.

Installation progress:

1. PXE requests DHCP server
2. DHCP server replies with undionly.kpxe
3. iPXE takes control of boot process
4. iPXE calls for http://server/winpe/boot.ipxe script
5. boot.ipxe script sets username/password
6. boot.ipxe sanhook iSCSI driver as 0x80
7. boot.ipxe initiates wimboot
8. computer boots WinPE
9. from WinPE a samba drive mounted as I:
10. cd win10/amd64
11. setup
12. standard Windows 8.1 installation
13. installation reaches "updates" stage
13. installation gives warning that it detected an error and can not continue

iPXE boot.ipxe script

Code:

#!ipxe

set username [your iSCSI username]
set password [your iSCSI password]

set initiator-iqn iqn.2010-11.org.ipxe.dolphin:client1

sanhook iscsi:192.168.0.64::::iqn.2016-12.com.coguar.moon:storage.lun1

cpuid --ext 29 && set arch amd64 || set arch x86
kernel wimboot
initrd ${arch}/media/Boot/BCD           BCD
initrd ${arch}/media/Boot/boot.sdi      boot.sdi
initrd ${arch}/media/sources/boot.wim   boot.wim
boot

Does anybody had a better luck with Windows 8.1 installation in similar setup?
How far did your installation progressed?

Andromeda X