Preserving your Mac
Mac and OS X are very stable and reliable. However, if you want the Mac to work perfectly is to be maintained properly. Most of the errors and defects that occur due to incorrect permissions in the MAC table. Mac OS X, UNIX-based system is the Unix way of dealing with files. UNIX as a multi-user system is a special way to manipulate the files in use. When the new software is installed on your Mac or not the rest of the system changes, it is very likely that the permissions messed up himself so as not to be the state of application implementation, or it may happen that the Mac is odd. The easiest way to set permissions is to use the Mac OS "Disk Utility" X, which can be found in the / Applications / Utilities.
Secure rights are recommended pre and post setting up any software program in your Macintosh in addition to application updates. You will find various kinds of software on the web to help keep your Mac is going to be taken care of and "good health". Software for example Onyx or Cocktail to complete a fantastic job not just to repair and appearance the authorizations for you personally, but in addition for cleansing Web history, cache, temporary files, and optimizing scripts running.
If for some reason, can not boot the system before you do something like reinstall the operating system, try pressing Command + S in the system and to start in console mode. Type / sbin / fsck-fy and press Enter. Do this several times until it says "system change". Before using "fsck" command, I advise you to open the terminal, type man fsck and read the manual page. Not all software errors are easy to solve with the above methods. Some of the errors and misconduct system may indicate a serious hardware failure if problems persist, it is best to take your Mac to an Apple Authorized Service for a checkup.