moving data from old iMac to a new iMac via a cable connection
How do I move data from my old IMAC to the new one using a cable?
iMac 27″ 5K, macOS 13.6
How do I move data from my old IMAC to the new one using a cable?
iMac 27″ 5K, macOS 13.6
[May not be relevant answer but] I have found Migration Assistant (Applications/Utilities) does this quite well, even if the target Mac is running a newer OS. Last time I used an Ethernet cable for connection and enabled sharing on the old Mac before starting.
We need to now which exact Macs you have, but other than moving a TimeMachine drive over, Target Disk Mode may work...
Transfer files between two Mac computers using target disk mode - Apple Support
moving data from old iMac to a new iMac via a cable connection