I would appreciate any input on an issue that's causing me some concern about the move to my (soon to arrive) new Mac Pro 2013. In my past OS upgrades I always installed on top of my existing OS to avoid losing years worth of various and sundry updates, addition and modifications to my existing apps. What I hoped to do now was to upgrade to Mavericks on my current Mac (1,1), then clone to system and "restore" it to the nMP. This unfortunately cannot be done (Mavericks will not install on my oMP). So, what to do: 1. Just use the standard Setup/Migrate tools to import my stuff to the nMP. My concern is that I WILL lose important things. I have never been able to find documentation on what these Apple supplied tools actually do in terms of transferring files that may not be in their canonical locations. 2. Is there any way to upgrade my current system with Mavericks? I've seen the following (posted by sand84, etc.) a. Make a bootable clone of the current system b. Boot to the recovery system on the new MP c. "reinstall" OS X to the external, bootable clone, made in step a. d. "restore" updated clone to the new MP. Here's what I don't understand. Wouldn't the reinstall step wipe out the clone? Any information or alternative suggestions would be much appreciated. Thanks.