Hi,
sorry to be a pain, but I would like to pick your brains. You said “Buy a USB external drive. (You could also buy thunderbolt or if your iMac is old Firewire but any iMac since 2012 or 2013 will be USB3 and that is the cheapest by far).
You can buy them already formatted for Mac .. I suggest drives of around 2TB for 2.5" portable type and 4TB for 3.5" desktop type (come with power supply). I use HGST Touro. Others use WD or Seagate or LaCie.. makes little difference. You can see the hgst drive in the Finder screenshot above.. I use a 3.5" 4TB one which is partitioned into two parts and I run Time Machine to one partition and Carbon Copy Cloner to the other due to Time Machine really being unreliable now. “
1) Can you tell me why They are easier to operate than the TC?
2) Do they use Time Machine in the same way as the TC?
3) How do I ensure that the USB drive is already formatted for my late 2014 iMac running OS Catalina
4) Could you send me, say an Amazon UK link that matches your criteria? I have looked myself but nothing leaps out that meets your spec. This link would also enable me to see what the USB looks like.
if I am abusing your good nature, just tell me.
Bill