Using external hd to back up time machine question

[cfII]

I just got a 13" but now have found a good deal on a 15". If I back up my 13" on to an external hd using time machine, can I just plug it into my new machine to restore?

 

[simsaladimbamba]

Yes.

Mac OS X 10.5, 10.6: How to use Migration Assistant to transfer files from another Mac
Pro Tip of the Week: Move All Your Stuff to a New Mac — Quick
Migration Assistant - Use Migration Assistant to Copy Data from a Previous OS
6 easy steps to migrate your Mac using Time Machine

Time Machine FAQ - 14. How do I restore my entire system?

Using Setup Assistant on Snow Leopard or Leopard

Setting-up a new Mac from an old one or its Backups

Target Disk Mode

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[miles01110]

Yes. Use Migration Assistant.