Given below are the steps, showing how to make a Mountain Lion bootable USB/SD Card/DVD drive using the Lion DiskMaker. Must note that Lion DiskMaker will erase the volume or the drive you chose.

Etcher is the easiet ISO image burning software we've come across in a very long time that allows you to Flash OS images to SD cards & USB drives.

The addition of a built-in SD card reader to the 13" and 15" MacBook Pros may have dubious utility for many users, but Apple has seen fit to include at least one feature with lots of potential use ...

Lion Diskmaker has been updated to allow you to make a bootable USB or SD Card installer on a 8GB piece of media. The process is straightforward: 1.

Etcher can actually make a bootable SD card from any operating system image, but we’ll be using it for Raspberry Pi images more than anything else.

Installations typically do not work with SD cards because they are connected differently in a way that the computer can't boot from them. Same thing on PC as well, unless you use a USB SD card reader.

XDA-Developers hackers make booting from SD Card possible for Exynos-based devices The awesome hackers over at XDA-Developers forums are always at work making tweaks and hacks for our devices.

It is recommended to create a System Restore point before going forward. Create Recycle Bin for USB Drive, SD Card, External Hard Drive, etc.