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I'm sure there'll be a hack to get the powernap feature working on upgraded older Macs.

You can add an SSD in place of your original drive. That means that if you can add TRIM support to a 3rd party drive with a hack, powernap should end up being the same eventually depending on how fast it takes someone to create something similar to TRIM enabler.

You can also add 2 SSDs by removing your DVD drive and fitting a second one using an adapter. 3rd party external USB drive housings for the original drive are also available and the procedure for getting a laptop or I presume, pre-2011 Mac Mini as well, to recognise the external drive without errors in iDVD or DVD Player is to edit the following:-

Download a hex editor like the free software 0xED by Suavetech.

Navigate with your Finder to the following file on you main hard drive: /System/Library/Frameworks/DVDPlayback.framework/Versions/A/DVDPlayback

For safety reasons it would be advisable to copy the file DVDPlayback to a backup folder.

Open the file with 0xED. Press cmd+F to open a search window.

Enter "Internal" without the " in the search field and "External" in the replace field and click on replace all. Afterwards there should be a little info saying that 4 changes have been made.

Now go to File -> Save as and save the file to your desktop. Close 0xED and move the edited file back to the initial folder (/System/Library/Frameworks/DVDPlayback.framework/Versions/A/)
You will be prompted to enter your system password. Now plug your Superdrive into the USB port (if not already plugged in). It should now be successfully initialized and ready for use with all your applications.

(This was posted in a review of the Optibay on Amazon.)
 
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