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I want to change the way my Mac system is setup.

I currently have one large hard drive that has all the OS, applications and user data stored on it.

I would like to purchase a separate hard drive (preferably SSD), and have ONLY the Mac OS and applications installed on this. I will then use the current disk to store all user and applications data, files, media, etc.

My question is, how can I SAFELY migrate the Mac OS and Applications to the new drive but leave all other data on the current drive?

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migrated from stackoverflow.com May 31 '13 at 2:07

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Ouch you might be out of luck, save important documents, reinstall on SSD, install applications? –  Justin Meiners May 30 '13 at 21:24
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Here is how I would do it:

  1. Backup the harddrive on a a backup drive (this could be done with Time Machine)
  2. Fresh reinstall of OSX on the SSD
  3. Follow this to setup the home on a different partition
  4. Use the migration assistant to grab accounts and App from the backup drive.

Because I'm lazy and coping/backing up takes for ever I would not wipe the hard drive and just rename /Users or try to use it as is directly actually :P and skipping step 4.1 (where 4.2 would be moving Apps to the SSD).

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