First and foremost, make sure one has a good USB memory stick make available. Some USB products can be inimical to the whole process if any error emanates from it due to it been likely damaged. It is first to recommend a trusted product. Usually going for Kingston, Samsung and Sony products is a good choice due to their good qualities, guaranteed and one can be confident of their capacity to function at maximum level with little or no trouble at the end. So, any of those products is best bet. Another thing is having a working Mac system at one disposal to carry out the process is the ultimate. It is where must of the works is going to be carried out, the whole steps in creating the bootable USB key.
Take the following steps to create a bootable Mac OS X USB key:
Step 5: Click Erase at the top of the Disk Utility box. On 'Format' select Mac OS Extended (Journaled). On 'Name' type in the Version of the Mac OS X you are going to install or which ever name you want to name you disk. Click on the ' select on start -up screen and click Apply to continue with the partitioning of the USB key.