Convert Mac OS X .dmg file to .iso format on Ubuntu Linux

1. Install dmg2img:

   sudo apt-get install dmg2img

2. Convert .dmg file to .img:

   dmg2img -i /path/to/mac.dmg -o /path/to/mac.img

3. To mount the .img file:

   sudo modprobe hfsplus
   sudo mount -t hfsplus -o loop /path/to/mac.img /mnt

4. To convert the .img file to .iso format:
   • Install ccd2iso:

     sudo apt-get install ccd2iso

   • Convert .img file to .iso

     ccd2iso /path/to/mac.img /path/to/mac.iso