The whole story with this installer has been due to a query
at #altlinux whether there's a distribution image similar
to altlinux-p7-rescue.iso which appears to be booting under
Hyper-V Gen. 2 without a hitch; changing just the kernel
towards the newer one made the user rather happy since
everything worked out-of-box for him, even unimportant bits.

Of course it's mostly due to boyarsh@'s preceding work :)

NB: there's no use to build i586 version as that hypervisor
lacks CSM (BIOS implementation) and would only boot UEFI
compatible operating systems with pretty strict requirements.