Somehow I ended up with two backup folders for Time Machine: inside the Backups.backupdb folder are "Pedro's MBP" which contains backups from 2008, and "Pedro's MBP2" which contains backups from 2009. This was not intended. Now when I open Time Machine, I have to select either "MBP" or "MBP2" to read from, but if I select "MBP2", for example, I can not see the backups inside "MBP" and vice-versa. How can I merge these two sets of backups into one common folder? ie, merge all backups from "MBP2" into "MBP", so that when I open Time Machine, ALL backups are available at the same time. I have seen posts covering how to copy/move backups to a NEW backup drive, how to make and use multiple Time Machine drives, but nothing on how to merge multiple backup folders or disks into one. Thoughts?