Creating ISO files in OS X 10.6 (Snow Leopard)

I found a lot of rubbish that probably was relevant to earlier versions of OS X, but the most relevant were:

In a nutshell:
1. If you have some stuff on your hard disk that you want to make into an .iso.

Use Disk Utility to create a new image File->New->Disk Image from Folder
and create a .dmg image of type hybrid

now convert the image to a .iso with the command:

$ hdiutil makehybrid -iso -joliet -o newimage.iso sourceimage.dmg

2. If you want to make a .iso from a CD or DVD:

. Insert CD/DVD source

. Umount the disk with the following command:

$ diskutil unmountDisk /dev/disk1
Disk /dev/disk1 unmounted

. Make sure you are in a directory where you have write rights, and you can use use dd to create the ISO file (may take some time):

$ cd ~
$ dd if=/dev/disk1 of=file.iso bs=2048

. Test the ISO image by mounting the new file (or open with Finder):

$ hdid file.iso

. The ISO image can then be burnt to a blank CD/DVD.

About RedNectar Chris Welsh