The situation: I'm running Ventura (13.1) on an M1 Macbook Air (2020) and I have a 3 TB external HD, format Mac OS Extended (Journaled), that I use as a Time Machine backup volume for 5 different household computers (not using a LAN -- I physically connect the external drive to each computer when I want to run a backup). It has now filled up, and I have purchased a 5 TB external HD. I want to move the TM Backup for one of my 5 computers onto the new hard drive.
There are multiple articles online explaining how to clone an entire TM backup volume from one external drive to another (many of them explicitly contradicting one another). But I have yet to find any instructions on how to clone the backups for just one computer from an external drive that is used for multiple Macs.
Is this even possible? If not, I guess my next-best solution is to do a fresh, from-scratch TM backup of the chosen computer onto the new drive, and then delete the old backup from the old drive. But this raises a related question: is there a way to delete a backup of just one computer from a TM drive containing backups of multiple machines?