Disk Utility "Resize Image" ghosted

Just want to resize a disk image Folder. However the Resize Image icon AND the Resize submenu in the Images menu are both ghosted. I am following the Disk Utility Help instructions:

Resizing a disk image
If you can read from and write to a disk image, you can make it larger or smaller when you either need to save disk space or store more information in it.

"To resize a disk image:

Select the disk image if it appears in the list at the left, and then click Resize in the toolbar.

Otherwise, click Resize in the toolbar, and then select a disk image from the dialog that appears.

Select a new size."

bob

MP 2.26 GHz dual quad, 6 GB, Mac OS X (10.6.2)

Posted on Aug 29, 2010 10:41 PM

22 replies

Bob Savryk Author

Level 1

26 points

Sep 6, 2010 9:16 PM in response to andyBall_uk

andyBall_uk,

Thanks for your continued effort to resolve my DMG Resize problem. I think that I tried the unmounting method per balTwo's advice. However, I tried again because of your success. My result with unmounting the READ/WRITE DMG was the same - ghosted Resize icon and Resize subMenu.

Are you using the same OS version and DU version as I am using?

bob

andyBall_uk

Level 7

20,516 points

Sep 7, 2010 12:23 AM in response to Bob Savryk

File -> New -> Blank Disk Image
unmount it
resize worked

this on 10.6.4 Disk Utility 11.5.1

Bob Savryk Author

Level 1

26 points

Sep 7, 2010 11:27 PM in response to andyBall_uk

File -> New -> Blank Disk Image
unmount it
resize did NOT work!

this on 10.6.2 Disk Utility 11.5 (298)

baltwo

Level 9

62,386 points

Sep 7, 2010 11:47 PM in response to Bob Savryk

EJECT the mounted image, not unmount it. then you can resize the dmg file.

Bob Savryk Author

Level 1

26 points

Sep 11, 2010 12:14 AM in response to baltwo

Thanks baltwo,

The EJECT method works on both new and old folders and a new "blank disk image."
For some reason the Resize Image icon is ghosted; but the Menu -> Resize Images submenu is not.
Also, when I eject the DMG file in the SIDE Panel of a Finder window, the entire Finder window closes.
This only happens when DU is open after a resize operation.

bob

baltwo

Level 9

62,386 points

Sep 11, 2010 10:45 AM in response to Bob Savryk

Thanks for the feedback. I don't use the sidebar in Finder windows, so can't address that issue. Good computing.

Oct 12, 2010 9:16 PM in response to Bob Savryk

Hello,

I am having some similar issues. I was able to resize my dmg file, but the volume size has not change. I created an encrypted disk image a while back for personal files, but I have out grown it and want to add more room. Now that the dmg file is bigger, how do I get the volume to show more room available?

Thanks!

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Disk Utility "Resize Image" ghosted