HT202369: How to verify the authenticity of manually downloaded Apple software updates

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MHKI

Q: iMac STUCK - Installed this security update 2015-003

SECURITY UPDATE 2015-003

 

i was surfing and all of sudden i had a completely WHITE-PALE-CREAM (i dont know) screen, no text-icons-nothing.

 

i then restart the iMac (27-inch Mid 2011, i7 3.4ghz) and it ALWAYS hangs on the apple logo, greyish screen, and the loading bar stops at about 20-25% then the white screen seems getting slightly darker (still light grey), but the apple logo goes away

 

and it stays like that no matter what.

 

recovery mode doesnt seem to work

 

 

 

 

this less than half a day i have installed this latest SECURITY UPDATE

 

 

 

???

iMac (27-inch Mid 2011), OS X Yosemite (10.10.2), null

Posted on Mar 21, 2015 12:59 AM

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Q: iMac STUCK - Installed this security update 2015-003

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  • by MHKI,

    MHKI MHKI Mar 21, 2015 1:14 AM in response to MHKI
    Level 1 (0 points)
    Mar 21, 2015 1:14 AM in response to MHKI

    -removed all usb- tb- ethernet devices

     

    smc and nvram resetted

     

     

     

    still stuck

  • by GaryS-InAlabama,

    GaryS-InAlabama GaryS-InAlabama Mar 21, 2015 2:15 AM in response to MHKI
    Level 1 (0 points)
    Mar 21, 2015 2:15 AM in response to MHKI

    I just had a very similar incident on my 27" late 2014 iMac with Retina display.  I downloaded & installed the security update last night via software update & ran my iMac with it this morning.  About 3 hours in, I had a number of applications open (MS Word for Mac 2011 14.4.8, Google Chrome Version 41.0.2272.101 (64-bit), & SimpleComic Version 41.0.2272.101 (64-bit).  Chrome was streaming a video via YouTube while I was in SimpleComic.  Suddenly, my screen bifurcated vertically -- half black, half white -- and a tick-tock, countdown-like sound began.  That never ends well in movies so I forced a shutdown by holding the power button.  I restarted, all seems well thus far.  No automated opportunity to "report to Apple," so here are my specs.

     

    Hardware Overview:

      Model Name: iMac

      Model Identifier: iMac15,1

      Processor Name: Intel Core i5

      Processor Speed: 3.5 GHz

      Number of Processors: 1

      Total Number of Cores: 4

      L2 Cache (per Core): 256 KB

      L3 Cache: 6 MB

      Memory: 8 GB

      Boot ROM Version: IM151.0207.B01

      SMC Version (system): 2.22f16

  • by MHKI,

    MHKI MHKI Mar 23, 2015 7:09 AM in response to Eric Root
    Level 1 (0 points)
    Mar 23, 2015 7:09 AM in response to Eric Root

    fixed (apparently)

     

    thank you :-)

     

     

    i managed to get Internet Recovery

     

    then (one of the many times) later, push only CTRL (i have tried hundred times many combinations with option, command, shift, control) on start up

    and all came back nicely

     

     

    ALT + CMD + S (single user) and wrote

    fsck -fy

    did a couple of times as suggested on the internet until all looked fixed


    thenk to get Internet Recovery

    ALT + CMD + R

     

    (+ i fully downloaded yosemite on an external hard disk on another mac)

     

    as soon as i went back in, i verified-fixed the hard drive permissions etc.

     

     

     

    thanks thanks

     

    thanks

  • by Eric Root,

    Eric Root Eric Root Mar 23, 2015 7:19 AM in response to MHKI
    Level 9 (72,844 points)
    iTunes
    Mar 23, 2015 7:19 AM in response to MHKI

    You are welcome.