1. Launch Disk Utility (Use Spotlight for quick find)

2. Create new Disk Image
2.1. Create from Folder
- Put all the stuff in a folder (e.g. ~/Desktop/ISOCONTENT).
- Choose File -> New -> Disk Image From Folder

- In the Sleect Folder to Image dialog box, select our folder (e.g. ~/Desktop/ISOCONTENT)
- Next you will be asked to save the image, choose the following option for Image Format & Encryption and save to the Desktop

2.2 Create from DVD
- Click the DVD drive in Disk Utility
- Choose File -> New -> Disk Image From “<DVD Label Here>”

- Next you will be asked to save the image, choose the following option for Image Format & Encryption and save to the Desktop

3. Create ISO from the Image
- Now you have the image of folder or DVD on your Desktop (with extension .cdr)
- Next step is creating the ISO from this image file
- Open Terminal (using Spotlight for quick find)
- Issue these command
cd ~/Desktop
hdiutil makehybrid -iso -joliet -o myiso.iso myiso.cdr
(Change the name of myiso.iso and myiso.cdr to your own file name)
- Wait for your final ISO
4. Enjoy
