Hdiutil doesn't resize image

I'm trying to add files to an existing .dmg image.
Several pages on the net suggest to do the following to achieve this:
1. hdiutil convert foo.dmg -format UDRW -o foo-rw.dmg
2. hdiutil resize -size <size> foo-rw.dmg
3. Mount foo-rw.dmg
4. Update foo-rw.dmg
5. Unmount foo-rw.dmg
6. hdiutil resize -sectors min foo-rw.dmg
7. hdiutil convert foo-rw.dmg -format UDBZ -o foo-bz
This makes a lot of sense to me and works. At least to a certain degree. If I just add small files to the image and thus let out step 2, everything is fine. If I try to resize the image that works as well, but I can't get the image bigger than 1245192 blocks, while this page (http://www.applepedia.com/Turnyour_OS_X_install_CDs_into_an_installDVD) suggest to bump the size up to 2 gigabytes.
What am I doing wrong?
Regards,
myce
Mac OS X (10.3)

JWindow is the Swing equivalent of java.awt.Window (and actually derives from it)

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I don't know anything about the jpeg encoders, but I do see code that doesn't make any sense to me:
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Image temp = new ImageIcon(resizedImage).getImage();What is the point of creating an ImageIcon from a null image?
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From: [email protected]
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