« Reply #1 on: August 23, 2013, 08:27:50 AM »
You can boot the cube into target mode but it's probably not possible to migrate from 10.3 to 10.8 (which the new iMac will have installed). According to
this support article:
Migrating from OS X Tiger v10.4 to OS X Mountain Lion v10.8 or later is not supported and is not expected to complete via Migration Assistant. For upgrades from OS X Tiger or older to OS X Mountain Lion or later, you can make a standard file sharing connection and manually copy your files. Recommended folders to transfer from your Home folder on the old computer to the new computer are:
Documents
Music
Movies
Pictures
Desktop
Copy these folders and any others you'd like to transfer to the same locations on the new computer. For more information regarding file sharing in OS X, see Mac Basics - File sharing. Note: Copying any data files from your user Library folder to the new computer could have unexpected results. It might be a good idea to see if Apple can do the transfer. Since you can't migrate from 10.4, it's unlikely that you can do it from 10.3.
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Jon
macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P700, Photoshop CC, Lightroom CC, MS Office 365