Macworld What if something goes wrong and you need immediate access on-site to a full backup of your Mac’s startup volume or an external drive, and you need to return to work as soon as possible? The introduction of Apple silicon made it difficult to create a drive you could swap in and start up from, but that shouldn’t stop you from making a backup that will get you back in business. (There are workarounds, but it requires ongoing effort.) The best option to have a nearly hot-swappable copy of your most important locally stored data is a clone. A clone is an exact copy of the current state of…