2016-001 security update restart blocks iMac
This is an iMac of 2013 end on OS X 10.11.6. Installation of security update 2016-001 10.11.6 requires a reboot. The iMac freezes on the restart with a black screen showing a cursor sensitive but do not restart. Is the only alternative to the power of the machine cycle. I downloaded and reinstalled OS X 10.11.6 on the App Store. After installation, restart in the Apple menu has worked very well and directly for 3 restarts successfully. I then tried again to install the security update. When he initialled the reboot, the machine hung up again as previously described. I have power drove the machine and after reboot, restart from the Apple menu has failed, resulting in the same shot on reboot as described above - black screen, sensitive cursor.
The machine runs an i7 processor at 3.5 GHz with 16 GB 1600 Mhz DDR3 RAM and a 256 GB SSD.
Any ideas on how to solve this problem would be greatly appreciated.
TIA,
John
If the problem is still there, try to start safe mode using your usual account. Disconnect all devices except those necessary for the test. Shut down the computer and then put it up after a 10 second wait. Immediately after hearing the startup chime, hold down the SHIFT key and continue to hold it until the gray Apple icon and a progress bar appear. Startup is considerably slower than normal. This will reset some caches, forces a check for directory and disables all start-up and connection, among other things. When you restart normally, the initial restart may be slower than normal. If the system is operating normally, there may be 3rd party applications that pose a problem. Try to delete/disable the third-party applications after a reboot using the UN-Installer. For each disable/remove, you need to restart if you do them all at once. If it works, try to rerun the update from the drop-down list. If it is successful, use the link below for the security update.
Start Mode without failure-El Capitan.
Tags: Mac OS & System Software
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After the Apple logo appears, this may take longer than usual to reach the login screen or your office. This is because your Mac performs a check of directory of your drive to boot in safe mode.
To leave safe mode, restart your computer without pressing any keys during startup.
If you do not hear a startup chime after pressing the power button, see what to do if your Mac does not illuminate.
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