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Splitting large DMGs to fit on FAT32 Filesystem

Published by Robert Bousquet on 2009-10-03 02:30:00 UTC

I have a USB key where I store all of the installers and operating systems that I need to get setup on any machine. Since I have OSX, Windows and Linux operating systems stored there and I won’t always be using Mac hardware, I chose FAT32 despite its filesize limitations. To workaround the 4gb limit on individual files I use the following command to split the larger dmg images of OSX install disks:

$ hdiutil convert OSX.dmg -format UDRO -segmentSize 4000m -o OSX-split.dmg