[ubuntu] How to move VMs in group?

Hi all,

Host - Ubuntu 16.04
VirtualBox
C-drive 1TB SSD
VMs - Ubuntu desktop/Windows

I have 41 VMs installed. I'm prepared to install a new 2TB SSD on this box and move all existing VMs to its VirtualBox. Then the C-drive will be wiped out for another use.

Is there an easy way moving all VMs in group?

A breif googling found following links:-
1)
VirtualBox: how to move a vm to another disk
https://robertoschiabel.wordpress.co...-another-disk/

2)
How to move VirtualBox VMs from one drive to another
http://www.techrepublic.com/article/...ve-to-another/

Are they relevant?

Thanks

Regards
satimis