I have a customer who buys a 2012 iMac to replace his old 2010 iMac. The 2010 iMac has an SSD with macOS 10.13 and would like to replace the mechanical HDD in the newer Mac with the SSD he's got in his 2010 iMac that he recently replaced.
I have two options to tackle this:
I just migrate the SSD from the old iMac to the new iMac. Then upgrade macOS from 10.13 to a newer macOS. This will account for any driver incompatibilities as the hardware on the new mac is different.
I migrate the SSD likewise, but then reformat and reinstall a newer version of macOS, so as to avoid any driver incompatibilities.
Option 1 is certainly faster and will avoid having to reinstall apps etc. Will I have major issues with driver compatibility, etc?
Any help much appreciated.