see also: https://forum.vyos.net/showthread.php?tid=26961
Upon installing the beta of vyos on a 32gb SSD, the auto partitioner partitions the harddrive from sector 0 to the end, which causes the grub installation to fail.
Workaround: manual partition, leaving space at the start of the drive.
(parted) mkpart primary ext4 2048s 100%