| You may encounter a number of warning signs that | | | | You can try out the below steps to sort out this |
| occur while booting Mac OS X, and "prohibitory" sign | | | | issue; but you need to reinstall the operating system |
| is a common one among them. It indicates that | | | | if system files are missing or damaged: |
| something is wrong with the bootable installation of | | | | • Reset PRAM (Parallel Random Access |
| the operating system. Either the settings between | | | | Memory): Hold Options+Command+P+R keys just |
| hardware and software components are not valid, or | | | | after pressing power button and system resets |
| some critical data structures/system files of your | | | | continually and boot chimes. Let this cycle complete |
| Macintosh machine are missing. Such situations can | | | | few times and release keys. |
| cause severe data loss problems with you Mac OS X | | | | • Repair the Hard Drive: Try booting your |
| computer. At this point, Mac Recovery becomes | | | | system using Mac OS X boot DVD and run file |
| essential if there is no valid backup available. | | | | system check and the permission fixes on boot drive. |
| Your Mac OS X system is more prone to this | | | | • Perform Erase and Install Installation: Use |
| problem, if it has multi-boot configuration. You can | | | | this option as a last resort only as it removes all the |
| get complete access to file system of another Mac | | | | data from hard drive and cause serious data loss. |
| OS X installation, when booted in one installation, that | | | | You can do this using boot DVD of Mac OS X |
| may cause inadvertent changes of critical system | | | | operating system. It replaces all damaged system |
| files. In most cases, you may not face this behavior | | | | files and data structures. After completion of reinstall |
| if you are running Boot Camp as Windows cannot | | | | process, restore data from the most recent backup. |
| access HFS+ file system volume by default. | | | | However, if the backup is not in place, File recovery |
| However, you can get full access of HFS partitions | | | | mac is the safest and simplest way to get your |
| from Windows by installing third-party applications. | | | | precious data back. |
| How to Fix Prohibitory Sign in Mac OS X? | | | | |