Slackware 14.2 with Hyper-V

After installing the system to the virtual machine one have to create an initrd with hv-modules included and add it to lilo.cfg.

mkinitrd -c -r /dev/sdx -m hv_vmbus:hv_storvsc:mbcache -u -o /boot/initrd.gz

add: initrd = /boot/initrd.gz to lilo.cfg and run lilo

thats it.