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For iDefrag, you will need to use version 5.2.0 or higher. This resolves problems with the reboot-and-defragment functionality, and might even make things work better for users of earlier versions of OS X.
On both iDefrag and iPartition, the “Create Boot Disk” option will not work (it has been removed as of iDefrag 5.1.5, and will be removed in the next update for iPartition). If you need to make a boot disk, please see this support article.
Finally, as with previous versions, if you are running OS X 10.10 or above and want to repartition your boot disk with iPartition, please make sure you have read our notes on Core Storage.
Posted by alastair at 2016-Sep-21 14:09:49 UTC. Last updated 2017-Jul-26 12:07:29 UTC.