abhinav19
Level 1 (4 points)
Notebooks

Q: MacBook Pro (OSX) shows a No-Entry sign

I have a MacBook Pro (13-inch, Mid 2011) that currently runs OS X El Capitan Version 10.11.4 and operates as smooth as it always as. However, each time I update my OS (from AppStore after I get a notification regarding the availability of a newer version), the new file gets downloaded from AppStore and as soon as it goes to restart mode it never boots up. Instead it shows a 'no-entry' sign and I've to repair it through internet. I assume this has something to do with the recovery segment, but I would greatly appreciate if someone could provide me an expert advice.

 

Warm Regards and Thanks in advance,

Abhinav

MacBook Pro, OS X El Capitan (10.11.4)

Posted on Apr 14, 2016 12:13 AM

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abhinav19

Q: MacBook Pro (OSX) shows a No-Entry sign

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  • by jeremy_v,

    jeremy_v jeremy_v Apr 15, 2016 9:33 AM in response to abhinav19
    Community Specialists
    Apr 15, 2016 9:33 AM in response to abhinav19

    Hi abhinav19,
     

    Thanks for visiting Apple Support Communities.
     

    It looks like you have to use OS X Recovery to repair your Macintosh HD after updating OS X El Capitan. Even though it seems your Mac is back up and running, I understand why you'd want some advice about this situation. I'm happy to offer some steps you can try. 
     

    First, try to start up to OS X Recovery under normal circumstances as a test. You should see the following if your recovery partition is working:
     

    After your computer finishes starting up, you should see a desktop with an OS X menu bar and an OS X Utilities window with the options listed [in OS X: About OS X Recovery.]


    Additionally, when you use First Aid (to repair your hard drive,) do you see messages about any errors that were detected or repaired? You can find more help with using Disk Utility in Using Disk Utility to verify or repair disks.
     

    If this situation happens during a future update, try starting up in Safe Mode to see if you can start up in that mode--Try safe mode if your Mac doesn't finish starting up.
     

    Sincerely.

  • by Grant Bennet-Alder,

    Grant Bennet-Alder Grant Bennet-Alder Apr 15, 2016 10:09 AM in response to abhinav19
    Level 9 (60,759 points)
    Desktops
    Apr 15, 2016 10:09 AM in response to abhinav19

    Prohibitory symbol

    When you see a circle with a slash symbol instead of the Apple logo, it means your Mac couldn't find a valid System Folder to start up from.

     

     

    Valid system folder: this means it found a Folder designated as a System Startup Folder, and was able to load some stuff off the drive it was on, but some of the items in it (required for Startup) are missing or damaged.

     

     

    from:

    About the screens you see when your Mac starts up - Apple Support

     

     

    Repair of the drive with Disk Utility (possibly using Recovery) are appropriate, but if the situation does not resolve, a re-install in place may be required.