I have posted this on the Apple forums but without success so apologies for being repetitive, perhaps you good chaps might be able to help? I have two external HDD that I use for time machine backups currently and would like to combine them onto a much larger single drive that I have purchased (freeing up the drives for other use). There are many articles detailing how to transfer backups from a single drive to another, but not multiple. Can anyone advise how to do this? I note a single drive involves coping the backup.backups folder but of course I have two such folders. Do I drag both across and leave separate or should I be combining the contents of both folders into one? Will TM get confused if it sees more than on back up folder? Has anyone managed to successfully do this yet? Any help would be much appreciated. Regards Andy.