I'm playing with some disk images via loopback devices (e.g. /dev/loop0). When viewed in the Disks (Disk Utility) application there's a setting labeled "Auto-clear" which is currently set to OFF.
What does this setting do? Is it specific to loop-back devices?
(And how could I have found the answer myself? Tried Disks > Help, but it doesn't appear to support searching in a sensible way, and I didn't know which of the top-level choices to select (.. table of contents anyone?))
Best Answer
Yes, it is specific to loop devices. It means that when the loop device is unmounted, it will automatically be disassociated from the backing file.