In z/VM environment
ECKD DASDs need to be low-level formatted with dasdfmt and fdasd before
use. These devices don't have partition ids.
FBA DASDs are like normal disks - usable with sfdisk/fdisk - and have
partition ids.
Software raid and LVM on multiple devices are not supported at the
moment. Users could install with LVM on single disk and extend logical
volume to second disk.

In KVM environment
Virtual SCSI disks (virtio) are used which are like normal disks.

Bootloader is zipl from s390-tools package.

This commit introduces setup-dasd.in for DASD functions.