Don’t ask about CHR. I think that this product isn’t interesting for MT developers as in the beginning of existence.
To bypass your problem, use ISO of your favourite live linux (without installation) and my guide:
http://forum.mikrotik.com/t/chr-on-ovh-vps-ssd/107670/1
Keep in mind if your cloud provider (ramnode) use current version of KVM, they probably forcing to use VirtIO-SCSI… and CHR currently doesn’t supports it.
http://forum.mikrotik.com/t/problem-with-mount-point/94/1
I will be appreciated if you will test it.