So, I upgraded to 10.10.2 on 3 various Macs, no real issues seen. It downloads, processes, then reboots and upon reboot, completes the install, taking another 7-15 minutes (depending on if the boot disk is SSD or HDD) and then it's done. However, on one Mac, it has a bootable Mavs partition. On that Mac, I downloaded 10.10.2 with no issues, but after the reboot it came up on the Mavs partition, so it was running 10.9.2. I chose the Yosemite boot partition as the boot device, and rebooted. On that reboot, there was no further installation activity, unlike the other 3 Macs where there was an additional phase as noted above. The Mac in question says it's running 10.10.2, but I'm skeptical that the upgrade completed 100%. Any ideas on how to verify the upgrade and/or what might have been missed in the last phase that wasn't done?