Time Machine On Brand New External HD Shows a "Vault". Where Did That Come From?
I'm setting up Time Machine for the first time on my 2021 MacBook Pro. I've connected a brand new 5TB HD, which I've partitioned into a pair of 2.5TB partitions. One of them will be for Time Machine. There's nothing on the HD. Yet, when I go into Time Machine set-up mode, it says I have a "Vault" with 1.77TB free. It seems to be from an old back-up a year ago, which would have backed-up from an older computer and onto an older HD. I've successfully started a Time Machine back-up onto one of the partitions. But, I'd like to get rid of the Vault, wherever it is. I'd be grateful if someone can tell me where the Vault lives and how to delete it. I've provided a link to a screen grab showing the problem. Thanks for listening! JSA Time Machine and Vault icons during Time Machine Set-Up
MacBook Pro 15″, OS X 10.11