I'm planning to upgrade the main drive containing root and boot stuff. Currently Ubuntu 16.04 is installed in SSD, and Ubuntu 18.04 is gonna be installed in the new M.2 drive.
I've heard that when upgrading from HDD to SSD, cloning is not a good idea. So, I doubt cloning SSD to M.2 would be okay with the same reason. Is it better to clean install in M.2 than cloning it? If not, after cloning it the OS upgrade to 18.04 is possible?
I'm afraid I have to do everything from scratch all over again. I don't know how much speed boost I get from hardware upgrading, but I have to upgrade the OS for the latest Gimp upgrade. So if I have to get headache anyway I'll do things all together. That's why this question looks complicated. Any idea is welcome really. Thanks in advance.