I have an encrypted volume on OSX Lion.

How do I make it larger?


Let's do it the the Disk Utility way!

  1. I'm assuming you have opened Disk Utility and you can see your disk image in the list

  2. Make sure your .sparsebundle / .sparseimage is unmounted / ejected

  3. Select your disk image

  4. Select Images, then select Resize...

  5. Enter your password

  6. Resize that mofo

  7. Double-click the disk image in the list to mount it

  8. Choose your path

    1. If you select the actual volume in the list (the volume in the image, not the image) and the available space matches the new resized size, then you are done

    2. It doesn't match? Well... This means you have a disk image with a partition map. Read on.

      1. Unmount / eject that sucker

      2. Select the disk image (the .sparsebundle / .sparseimage)

      3. Select the Partition tab

      4. Drag the corner to enlarge partiton to the maximum size

      5. Select apply

  9. There is no step 9! Treat yourself to a large, toasty, disk image / chilled beverage

Ignore this method!

All it takes is a short Google search to discover the answer. Ray's Weblog has a solution:

A Sparse Bundle Image will increase in size automatically but will not shrink automatically. Before shrinking the sparse bundle, mount it and empty the trash to get rid of any deleted items from the image.

Unmount the image and follow the commands below.

To compact (image size stays the same):

hdiutil compact ~/Documents/filename.sparsebundle
hdiutil compact -help (for a list of options)

To increase the image size (eg., 20G to 30G)

hdiutil resize -size 30g ~/Documents/filename.sparsebundle
hdiutil resize -help (for a list of options)

Mount the image then do a Get Info on the Volume to see the new size.

  • what about the volume in the bundle? from what i see, you can't resize that. – hvgotcodes Jun 8 '12 at 3:07
  • Are we talking about a .sparsebundle, or a .sparseimage? – evan.bovie Jun 8 '12 at 3:24
  • Could you repair the broken images in this post? Upload them to the SE imgr host (just use the image button on the editor toolbar). – Martijn Pieters Oct 18 '13 at 15:12
  • @MartijnPieters I'll do that, but TinyGrab must have made some server code change that broke embeds. – evan.bovie Oct 22 '13 at 15:59
  • @emb1995: ah, they are indeed still there; TinyGrab replaced the actual image with a webpage showing the image instead. I grabbed the images from those pages (skipping past the silly overlay) and uploaded them to the Stack imgr host instead. – Martijn Pieters Oct 22 '13 at 16:09

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