How to make FileVault work again when you’re missing a 'secure token'

Several months ago, we posted a column called “What to do when FileVault won’t turn on,” which offered a set of strategies when you couldn’t get macOS to let you enable FileVault, Apple’s full-disk encryption (FDE) technology. These worked for some people who have followed up with us. The most severe of the scenarios was the “nuclear option,” which required a full backup or clone of your Mac, erase the drive, reinstalling macOS, and restoring your previous files. This would always re-enable the FileVault capability, but it’s a big investment of time and effort.I’d put off carrying it out on my MacBook, which had this problem, hoping another alternative would emerge. Fortunately, Rich Trouton has a solution at his Der Flounder site, where he often provides inside into tricky or unsolvable disk-formatting and encryption issues. (Thanks also to reader Christophe for alerting me to Trouton’s update.)To read this article in full, please click here