I'm trying to back up a Mac for a friend who moved and left her 2020 iMac 27 (Intel) with me. She is having me send her the data from it and then sell the Mac. The 1TB SSD iMac hard drive is in APFS format. I'm backing up to a Seagate (ST2000LX001) FireCuda 2TB Solid State Hybrid Drive in a USB-C external enclosure.
Things I've tried:
Created external drive as APFS and used Time Machine to back everything up. I tried to open it on an older (2017) Mac like her MacBook Air that she took with her. I don't see the drive as there at all. It does not mount.
Started over: Created external drive as Mac Journaled Extended and used time machine. The older Mac sees/mounts the disk but all the user files are locked (see pic & seem to be empty)
Created external drive as FAT. Then, I used Finder to just copy the user directories in
/Usersone at a time. Takes hours and invariably fails to complete. Some error happens hours into copying and it terminates the copy process with no hint as to what got copied and what didn't.
I either wind up with a drive that old Mac computers can't read, a drive that they can read but not see anything, or a partial copy.
What I'd really like to do is:
- Go into terminal
- Sudo to root
- Issue some command that copies everything to the external drive ignoring errors and does so without carrying over the macOS authentication scheme.
So I'd just wind up with an external drive full of her and her family's data that they could easily access without having to deal with permissions nonsense.
What is the best way to achieve this?