I am new to the OSX environment and have a question about mounting a SDHC disk. I use the SDHC for periodic backup purposes of some documents. I like to keep it in the SD socket of my MacBook Air for convenience sake. Since I do not need to access it on an on-going basis, is there a command setting that will stop OSX from auto mounting it at boot time? I am more familiar with linux and on that system, I can see the disk on my desktop (or in a directory menu) and can mount/unmount it by clicking on the name or icon. Is there something similar for OSX Lion? Thank you in advance for the help.