akfromnyc wrote:
I just bought a new fast iMac. I have tried three times to migrate data (about 800 Gb) from my old 2015 iMac to my new 2019 iMac.
The first attempt got 2/3 of the way overnight, via WiFi, and then hung.
Second and third attempts were via Ethernet network and both hung (same state an hour later)
https://discussions.apple.com/content/attachment/8981f870-ab2d-44c7-852d-26ff3a9a6d70
after size calculation completed but right after data transfer began.
Any suggestions? Neither Apple support nor a “senior” Apple advisor was able to help. The senior advisor suggested that this much data transfer probably overheats the older source Mac, causing it to shutdown. (But in attempts 2 and 3 data transfer did not even progress beyond commencement)
Catalina OS v 4 on both.
Thanks.
Any suggestions?
Using the Setup Assistant on the initial boot up is the most trouble free way of moving to a new machine.
Set up your new Mac - Apple Support
Migration Assistant is your second best bet.
How to move your content to a new Mac - Apple Support
Stick with a cable connection over wifi,
If necessary run the Migaration assistant more than once, and if you think the old mac is being overwhelmed than choose to move less at one time(?)
Alternatively if you have other backup sources, try using thee as the source to move your user over.
3-2-1 Backup Strategy: three copies of your data, two different methods, and one offsite.
Boot clone https://discussions.apple.com/docs/DOC-10081
How to use Time Machine to back up or restore your Mac: https://support.apple.com/en-us/HT201250
Use DiskUtility Restore feature https://support.apple.com/guide/disk-utility/restore-a-disk-dskutl14062/mac
note: >System Preferences>Security & Privacy >Privacy>Full Disk Access
unlock the padlock, press the + button and add Disk Utility
