Ubuntu ISOs will not mount in El Cap
Hi,
I have downloaded three different ISOs from Ubuntu and I cannot get any of them to mount in OS X El Capitan, in Disk Utility or otherwise. This means I cannot burn them to DVD. I tried opening them after rebooting to Safe Mode per this thread "No Mountable File Systems" and they continue to not be mountable. An error window pops up that says "no mountable file systems." Note that I downloaded the ISO image for Memtest86 and was able to examine it / mount it without difficulties.
Is this a bug with the current version of Disk Utility?
Thanks,
Craig
MacBook Pro (Retina, 13-inch, Late 2013), OS X El Capitan (10.11)