Mac – Disk utility, shrink 1 partition, expand the other

disk-utilitymacpartition

I have two partitions on my external HDD, I shrinked 1 partition (Macintosh Lion) in order to expand the other (Macintosh HD), but I can't drag the lower right corner to expand of the 'Macintosh HD' partition, I can only do it with the 'Macintosh Lion' one, ideas?

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Best Answer

Yes, Disk Utility can’t edit space in the “middle” of the disk, only space on the “ends”.

There is an app called iPartition that sounds like it does what you need. From the website:

iPartition makes it easy to create, destroy, resize or format partitions on your hard disks, whether internal, external, fixed or removable.

Two caveats: first, I’ve never used iPartition myself, so I can’t comment on its reliability. I’ve used their other product (iDefrag), which was very stable and I’d recommend, but not iPartition. Also, according to archived blog post, iPartition doesn’t work with Lion FileVault partitions. Don’t know if that affects you.

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