Migrate data to new iMac
My current "Mid 2011" iMac was delivered with
a 256GB SSD (where the apps are stored) and
a separate standard 2TB rotational HD (where data, eg music, photo's, etc are stored).
It is time to buy a new iMac.
When I come to migrate the data from the old to the new iMac (which I understand only has one SSD), how do I deal with the fact that the original has split data across two drives?
Thank you
iMac 27″, macOS 10.13