Memory corruption due to bad RAM in late 2012 iMac

I just unpacked a brand new late-2012 iMac a few days ago. Its specs are basically maxed out, only choice being the 3TB fusion drive. To summarize:
3.4 GHz Core i7
32GB RAM
3TB Fusion Drive
2GB NVidia
Latest patches for Mountain Lion
Since I got it, I have been experiencing intermittent abnormalities with it. Programs randomly crash with error messages along the lines of "such and such file appears corrupt, please run --repair".
I do a lot of programming in my job and just today I started getting bizarre 'segmentation fault' messages in Terminal. What worked just a few minutes ago started crashing with a segfault. The exact same programs have no negative effect on my Macbook Pro and work just fine. In a matter of minutes, the entire iMac became unresponsive and I got the "we shut down your computer to prevent damage" panic screen.
After a reboot, I started thinking it could be some sort of memory corruption. I downloaded the 'memtest' utility and started the basic test with:
memtest all 2
In just a few minutes, below are the results I receive (I re-ran multiple times to the same effect).
Any opinions on whether this is indeed bad RAM? How do I handle this with Apple support? Any suggestions/comments are most welcome.
Thank you,
Ozgun
Excerpt from the crash report in Console:
Process:         ghc [96618]
Path:            /usr/local/lib/ghc-7.6.2/ghc
Identifier:      ghc
Version:         ???
Code Type:       X86-64 (Native)
Parent Process:  Emacs-10.7 [37299]
User ID:         501
Date/Time:       2013-03-20 21:06:30.389 -0400
OS Version:      Mac OS X 10.8.3 (12D78)
Report Version:  10
Crashed Thread:  0  Dispatch queue: com.apple.main-thread
Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: EXC_I386_GPFLT
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   ghc                                     0x000000010bb44b10 evacuate1 + 5296
1   ghc                                     0x000000010bb4927f scavenge_block1 + 703
2   ghc                                     0x000000010bb4a78c scavenge_loop1 + 1548
3   ghc                                     0x000000010bb4639e scavenge_until_all_done + 798
4   ghc                                     0x000000010bb46c57 GarbageCollect + 1639
5   ghc                                     0x000000010bb378ff scheduleDoGC + 991
6   ghc                                     0x000000010bb3982b schedule + 1579
7   ghc                                     0x000000010bb39df4 scheduleWaitThread + 164
8   ghc                                     0x000000010bb3478e real_main + 68
Memtest Results:
Memtest version 4.22 (64-bit)
Copyright (C) 2004 Charles Cazabon
Copyright (C) 2004-2008 Tony Scaminaci (Macintosh port)
Licensed under the GNU General Public License version 2 only
Mac OS X 10.8.3 (12D78) running in multiuser mode
Memory Page Size: 4096
System has 8 Intel core(s) with SSE
Requested memory: 24009MB (25176211456 bytes)
Available memory: 24009MB (25176211456 bytes)
Allocated memory: 24009MB (25176211456 bytes) at local address 0x0000000101000000
Attempting memory lock... locked successfully
Partitioning memory into 2 comparison buffers...
Buffer A: 12004MB (12588105728 bytes) starts at local address 0x0000000101000000
Buffer B: 12004MB (12588105728 bytes) starts at local address 0x00000003ef4f4000
Running 2 test sequences... (CTRL-C to quit)
Test sequence 1 of 2:
Running tests on full 24009MB region...
  Stuck Address       : testing  1 of 16
FAILURE! Data mismatch at local address 0x0000000262d778c0
Actual Data: 0x0200000262d778c0
  Linear PRN          : testing  1 of 16
FAILURE! Data mismatch at local address 0x0000000262d77900
Expected Data: 0xa378ecfaa3ecf6b9, Actual Data: 0x0178ecfaa3ecf6b9
Running comparison tests using 12004MB buffers...
  Random Value        :
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x3ddd57d041eb5a06, BUFB Data: 0x3fdd57d041eb5a06
  Compare XOR         :
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x826aabfcebf44332, BUFB Data: 0x806aabfcebf44332
  Compare SUB         :
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x8e6cbb4010b8a88d, BUFB Data: 0x8a6cbb4010b8a88d
  Compare MUL         :
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x54fd2f0176d1ab9e, BUFB Data: 0xfefd2f0176d1ab9e
  Compare DIV         :
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x0200000000000000, BUFB Data: 0x0000000000000002
  Compare OR          :
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x6eaf35c4f7fc13fb, BUFB Data: 0x6caf35c4f7fc13fb
  Compare AND         :
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x6ea704c077fc1399, BUFB Data: 0x6ca704c077fc1399
  Sequential Increment:
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x7caad7e9fb32b8ca, BUFB Data: 0x7eaad7e9fb32b8ca
  Solid Bits          : testing  1 of 64
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0xfdffffffffffffff, BUFB Data: 0xffffffffffffffff
  Block Sequential    : testing   1 of 256
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x0200000000000000, BUFB Data: 0x0000000000000000
  Checkerboard        : testing  1 of 64
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x0155555555555555, BUFB Data: 0x5555555555555555
  Bit Spread          : testing   1 of 128
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x0200000000000005, BUFB Data: 0x0000000000000005
  Bit Flip            : testing   1 of 512
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0xfdfffffffffffffe, BUFB Data: 0xfffffffffffffffe
  Walking Ones        : testing   1 of 128
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x11fffffffffffffe, BUFB Data: 0xfffffffffffffffe
  Walking Zeroes      : testing   1 of 128
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x0200000000000001, BUFB Data: 0x0000000000000001
Test sequence 2 of 2:
Running tests on full 24009MB region...
  Stuck Address       : testing  1 of 16
FAILURE! Data mismatch at local address 0x0000000262d778c0
Actual Data: 0x0200000262d778c0
  Linear PRN          : testing  1 of 16
FAILURE! Data mismatch at local address 0x0000000262d77900
Expected Data: 0xa378ecfaa3ecf6b9, Actual Data: 0x0178ecfaa3ecf6b9
Running comparison tests using 12004MB buffers...
  Random Value        :
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0xf54d78773a1d75d1, BUFB Data: 0xf74d78773a1d75d1
  Compare XOR         :
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x01e08f19e0bd343d, BUFB Data: 0xbbe08f19e0bd343d
  Compare SUB         :
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x01e38c4ae6cbd9e0, BUFB Data: 0x5be38c4ae6cbd9e0
  Compare MUL         :
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x01d2ccf452aabcc0, BUFB Data: 0x5ed2ccf452aabcc0
  Compare DIV         :
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x0200000000000003, BUFB Data: 0x0000000000000003
  Compare OR          :
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x01f97d3f343b8641, BUFB Data: 0xe7f97d3f343b8641
  Compare AND         :
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x0181413c143a0641, BUFB Data: 0xe381413c143a0641
  Sequential Increment:
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x11df0c80ebf82821, BUFB Data: 0xf2df0c80ebf82821
  Solid Bits          : testing  1 of 64
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x11ffffffffffffff, BUFB Data: 0xffffffffffffffff
  Block Sequential    : testing   1 of 256
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x0200000000000000, BUFB Data: 0x0000000000000000
  Checkerboard        : testing  1 of 64
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x0155555555555555, BUFB Data: 0x5555555555555555
  Bit Spread          : testing   1 of 128
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x0200000000000005, BUFB Data: 0x0000000000000005
  Bit Flip            : testing   1 of 512
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0xfdfffffffffffffe, BUFB Data: 0xfffffffffffffffe
  Walking Ones        : testing   1 of 128
FAILURE! Data mismatch at local BUFA address 0x0000000262d77900, BUFB address 0x000000055126b900
BUFA Data: 0x11fffffffffffffe, BUFB Data: 0xfffffffffffffffe
  Walking Zeroes      : testing   1 of 128
FAILURE! Data mismatch at local BUFA address 0x0000000262d778c0, BUFB address 0x000000055126b8c0
BUFA Data: 0x0200000000000001, BUFB Data: 0x0000000000000001
*** Address Test Failed ***  One or more DIMM address lines are non-functional.
Execution time: 230 seconds.
➜  ~  memtest all 2

This must be my last last thing.  AHT was on an iMac I bought in 2009.  It was included on my "disk 2" along with several other applications.  When I wiped and installed the full Lion, AHT was gone.  Same is true for the full Mountain Lion installation media.  It does not have AHT.  I'm not at all sure how to get it back from Apple.
I was able to find it on my SL disc 2 and extract it again from that.  Disc 2 won't install on Mountain Lion (the packages are too out of date) but the AHT pkg does.
Since you have it, consider packing it up and keeping it safe.  Maybe someone who knows AHT better than I can elaborate on AHT.  From what I've seen, you get it when your mac ships but if you ever wipe and reinstall the OS, you lose it.

Similar Messages

  • Late 2012 imac 'not enough ram' for photoshop

    I have a late 2012 imac - 3.4 i7 16 gig ram and yet when using photoshop elements 9 it keeps freezing with a message saying not enough ram. Another problem which may or may not be related is MS word tending to freeze when I cut and paste??
    Any help greatfully received
    Thanks

    Well, I use PSE 11 and at least in my version I would recommend, as Adobe does, that you go into Adobe Photoshop Elements Editor>Preferences>Performance>and there I would set your RAM allocation ("Memory Useage" as they call it ) to at least around 12 GB while you are using PSE.  It is heavily dependent on the amount of RAM it has available:
    Message was edited by: Radiation Mac

  • I have a late 2012 iMac and a late 2009 mac mini.  I want to know if I can take the 8 GB of ram from the iMac and install it in my mac mini.

    I have a late 2012 iMac and a late 2009 mac mini.  I want to know if I can take the 8 GB of ram from the iMac and install it in my mac mini.
    According to Cruicial my mac mini could use:
    Module Size: 8GB Kit (4GBx2)
    Package: 204-pin SODIMM
    Feature: DDR3 PC3-8500
    Specs: DDR3 PC3-8500 • CL=7 • Unbuffered • NON-ECC • DDR3-1066 • 1.35V • 512Meg x 64
    Also According to Cruical my iMac uses:
    Module Size: 8GB Kit (4GBx2)
    Package: 204-pin SODIMM
    Feature: DDR3 PC3-12800
    Specs: DDR3 PC3-12800 • CL=11 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V
    I want to increase the ram in both computers. 
    So,  can I put the iMac ram in my mac mini and then I'd only have to buy ram for my iMac?  Naturally the ulitmate test will be when I actually install it,  but having an expectation of success or failure will allow me to plan on what to spend money on.
    Thanks,
    Bear

    Thanks for the responses.  I probably wont even try as my priority is Ram for the mac mini.  2 is not enough.  8 for my imac is okay for now. 
    Somewhere I thought I'd heard that faster Ram would simply clock at the lower speed.  It seems that I am incorrect.
    Thanks,
    Bear

  • Disabling Fusion Drive and Installing Windows on SSD of Late 2012 iMac

    Hi, everyone.  After a two-year wait, I'm ready to buy my first iMac (was waiting for USB 3.0).  Before I get into my questions, I'll give you an overview of where I'm coming from so we can keep the discussion focused.
    My Usage
    I'm buying an Apple computer because it is the best-looking, quietist, and most powerful all-in-one computer I can find right now, but Windows is still my preferred operating system.  I've used OS X before – it looks great and I'm sure it works great for a large number of people, but it's not for me.  Windows works well and efficiently for me and I have thousands of dollars of design software for Windows.  I'm not interested in a virtualization solution because of my performance needs.  However, I do want to keep the OS X installation, if possible, for website testing and to play around with to learn the operating system better.
    What I Want
    I was attempting to buy the Late 2012 iMac last weekend, but it appears the BootCamp specifications and the Fusion Drive are currently limiting my usage needs.  I'm configuring the top model iMac with the i7-3770 processor, 24GB RAM (8 default + 16 from Crucial), GTX 680MX, and the 3TB Fusion Drive.  I don't actually want to use the Fusion Drive, though.  I want Windows 7 64-bit and OS X 10.8 installed on the 128GB SSD and to use the 3TB hard drive as storage for my music, videos, photos, and documents.
    My Questions
    1.  I've found a bunch of posts regarding installing Windows on the Fusion Drive, but they all seem to be about putting Windows on the slower 3TB hard drive portion and/or about trying to keep the Fusion setup after installing Windows.  Does anyone have a walk-through for a new Mac user on how to break the Fusion Drive configuration and install Windows 7 and preferably OS X on just the SSD?
    2.  I've seen a bunch of posts debating about whether Windows can be installed natively using EFI to bypass the BootCamp limitations.  Is this possible?  The 21.5" version is running EFI version 2.0, so I can only assume the 27" would too, but it's not been added on the Apple website yet (http://support.apple.com/kb/HT1237).  From what I understand, Windows requires at least version 2.0 to run in EFI mode.  Also, if I am able to get this method to work, will I still be able to install the Windows drivers from the OS X installation USB (or do they even come with USB drives anymore?)?
    3.  If I have to use BootCamp, I assume I will have to split the 3TB drive into 1TB and 2TB partitions for BootCamp to see it (so Windows can see it).  So I'd have Windows 7 and OS X on the SSD, and two storage partitions on the 3TB HDD that would show up as two drives for my files that both operating systems could access.  Is this assumption correct?
    4.  I've seen posts about OS X automatically trying to rebuild the Fusion Drive.  Let's say I'm able to get Windows installed on the SSD.  Will OS X, or future updates to it, ruin my Windows installation?  I would hate to do all this work and then have an Apple update corrupt everything.
    I know this is a long post, but I don't want to spend over $3,000 until I can be sure I can make it work for me.  Thanks to anyone who can help!
    iMac, Windows 7

    First, an advice: Boot Camp isn't compatible with 3 TB hard disks and Fusion Drive. For 3 TB hard disks, there's a workaround, but it doesn't work on a 3 TB Fusion Drive, so you won't be able to install Windows until Apple fixes this, so my advice is to wait until Apple launches OS X 10.8.3 or buy the iMac with a 1 or 2 TB hard disk and an external disk.
    1. The SSD is used automatically by OS X to store the applications and data you most use, but Windows can't use it, and there's no workaround for this.
    2. You can try to install Windows 8 in EFI mode, but I don't guarantee that it works. I tried it on my iMac and I started getting BSODs after some startups. Also, Macs don't use UEFI 2.0 (Macs use EFI 1.x), so you can't use Windows 8 advanced features such as Secure Boot. For Windows 7, you can't install it in EFI mode (it requires UEFI 2.0 or later)
    3. Fusion Drive only allows you to have two volumes, and with Boot Camp, you can only have two volumes on your computer: one for OS X and the other one for Windows. That's because Boot Camp emulates a BIOS to make Windows run (although it isn't neccesary in Windows 8, if Apple would want).
    4. First, you can't install Windows on the SSD. Then, OS X shouldn't ruin Windows because each operating system have got its space

  • Late 2012 iMac Freezes every few days

    My iMac has been in the Apple Store for a week with the Geniuses and they came back saying they couldn't find anything so putting this out to this community in the hope someone else can help. Here are the details.
    Model: 21.5 inch Late-2012 iMac
    RAM: 8Gb
    Processor: 2.9Ghz Intel Core i5
    Graphics: NVIDIA GeForce GT 650M 512 MB
    Hard Drive: 1.12 Tb Fusion (653Gb free)
    OS: 10.8.4
    Software: Fairly vanilla with no MS or Adobe Apps. No system extensions or hacks installed.
    Symptom: Every few days or so the iMac locks up. Certain running applications will still work but many common ones such as Pages, Aperture, App Store & TextEdit will hang when trying to open. Force Quitting them doesn't affect them. When I try to shut down the computer it goes to the grey screen and stays there. Eventually the power needs to be turned off to reboot it. This has been doing this for the last several months.
    Solutions Tried:
    - Fixed permissions
    - Reset PRAM
    - Re-install OS X
    I can't replicate the crash but today it happened again. At around 3:50pm I went to the iMac and noticed that Pages wouldn't load. Force quitting the App didn't do anything. Aperture was not responding so force quit that. Still wouldn't re-open. Mail was working fine and I was able to send a test message. Safari worked fine. Launched System Preferences ok but could not launch TextEdit or App Store. Calendar opened and closed fine. Attempted to restart the Mac but got the grey screen and after 5 minutes of waiting turned the computer off & relaunched it.
    Here is a snapshot of some Console entries:
    5/09/13 2:27:41.316 PM coreaudiod[122]: Enabled automatic stack shots because audio IO is inactive
    5/09/13 2:28:16.449 PM coreaudiod[122]: Disabled automatic stack shots because audio IO is active
    5/09/13 2:28:17.262 PM coreaudiod[122]: Enabled automatic stack shots because audio IO is inactive
    5/09/13 2:28:50.579 PM com.apple.usbmuxd[68]: _heartbeat_failed heartbeat detected detach for device 0xdf3-10.0.1.10:0!
    5/09/13 2:37:54.690 PM com.apple.usbmuxd[68]: _heartbeat_failed heartbeat detected detach for device 0xdfc-10.0.1.10:0!
    5/09/13 2:42:04.656 PM lsboxd[209]: @AE relay 61657674:6f646f63
    5/09/13 2:47:21.156 PM com.apple.usbmuxd[68]: _heartbeat_failed heartbeat detected detach for device 0xe05-10.0.1.11:0!
    5/09/13 4:03:23.428 PM com.apple.launchd[1]: *** launchd[1] has started up. ***
    5/09/13 4:03:23.428 PM com.apple.launchd[1]: *** Shutdown logging is enabled. ***
    5/09/13 4:03:24.934 PM com.apple.launchd[1]: (com.apple.automountd) Unknown key for boolean: NSSupportsSuddenTermination
    5/09/13 4:03:26.157 PM airportd[30]: _processDLILEvent: en1 attached (down)
    5/09/13 4:03:26.342 PM UserEventAgent[11]: Captive: [HandleNetworkInformationChanged:2435] nwi_state_copy returned NULL
    5/09/13 4:03:26.609 PM fseventsd[39]: event logs in /.fseventsd out of sync with volume.  destroying old logs. (419745 5 419906)
    5/09/13 4:03:26.612 PM fseventsd[39]: log dir: /.fseventsd getting new uuid: A3689432-84D2-4FB0-8C25-0352BC004F8B
    5/09/13 4:03:26.666 PM mDNSResponder[40]: mDNSResponder mDNSResponder-379.38.1 (Apr 25 2013 19:19:56) starting OSXVers 12
    Notice that the last Console entry was at 2:47pm (in red) and then nothing. I went to use the computer at 3:50pm and did several actions on it. Plugged in iPad, opened iTunes. Copied a file from the iPad to the desktop. Prior to that it hadn't been used for several hours. The shutdown that I selected does not appear in the log (although it only managed to go to the grey screen rather than complete a full shut down).
    Appreciate any clues at all here. This is very frustrating and has been going on for far too long.
    TIA. Jordan

    Back up all data immediately as your boot drive may be failing.
    If you have more than one user account, these instructions must be carried out as an administrator.
    Triple-click anywhere in the line below on this page to select it:
    syslog -k Sender kernel -k Message CReq 'Channel t|GPU D|I/O|Previous Sh' | tail | open -ef
    Copy the selected text to the Clipboard (command-C).
    Launch the Terminal application in any of the following ways:
    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
    ☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
    Paste into the Terminal window (command-V).
    The command may take a noticeable amount of time to run. Wait for a new line ending in a dollar sign (“$”) to appear.
    A TextEdit window will open with the output of the command. If the command produced no output, the window will be empty. Post the contents of the TextEdit window (not the Terminal window), if any — the text, please, not a screenshot. The title of the window doesn't matter, and you don't need to post that.

  • Help for with slow, glitchy (late 2012) iMac

    This is an ANSWER and not a request for help.  I didn't know where to post this and apologize for stepping where I shouldn't. 
    I have a Late 2012 iMac that has been crashing, running slow, and now worse;  all my documents and everything in Finder have disappeared.  I discovered a fix that may help others with similar issues.  I use my iMac for use with Logic Pro X and Mainstage where freezeups are a disaster.  I thought about this awhile and realized I had installed a new USB 3.0 external hard disk a few months ago when this issue began. I began to experience more and more crashes and extremely slow performance.  Beach-balls and slow performance were common.  But the last straw was when everything in Finder disappeared.  My Document and Application folders were empty.  If I clicked on "About This Mac" I saw nothing.    It took two tries to prove my theory, but here's what I did to make "the fix".  I unplugged the USB 3.0 drive and all USB and external devices.  I did a restore of OSX Mt Lion.  All was back to normal.  But after plugging in the USB 3.0 drive, all the afore mentioned problems came back.  I did one more restore, this time NOT connecting the USB 3.0 external hard disk.  Now I have gone some time and my iMac's speed is back to "incredible", no beach balls or any sign of slow performance in recording or running any other app.  Apparently, the 2012 iMac; although spec'ed to be USB 3.0 compatible, may not be all that compatible. Hope this helps someone!

    Likely the external drive is bad or defective cable.

  • Late 2012 imac bootcamp error"Non system disk, press any key to reboot"

    Hey all,
    I'm having all sorts of issues with getting windows 7 installed through bootcamp. I have the late 2012 imac 27 inch fusion i7 16 gigs of ram 680gtx. I downloaded the latest bootcamp drivers to my usb after i re-formated it. Partitioned the drive 200 gig windows 700 gigs mac. It restarts and then i get this error screen, "non-system disk.(see photo below) Press any key to reboot." which of course is unresponsive. I hard reset with the Option held into boot back into mac. I'm using Windows 7 64 bit. Please, any help would be appreciated. I have a unopened copy of Bioshock Infinite waiting for me

    The Macs with a built-in Optical drive use the Windows DVD, because that is what BC tells it to be set to. The USB is not made bootable on such machines.
    The exceptions to this rule are (from Boot Camp 5.1: Frequently asked questions)
    Can I use a downloaded (ISO) version of Windows with Boot Camp?
    MacBook Air (Mid 2011 and later), MacBook Pro (Mid 2012 and later, including Retina models), Mac mini (Mid 2011 and later), and iMac (Late 2012) can install downloaded (ISO) versions of Windows 7 and 8.

  • How can I generate a mountain lion boot dvd for my 27" late 2012 iMac

    baught the 27" late 2012 iMac and didn´t get any software dvd with it.
    Due to the fact that I have the external DVD writer I would like to generate a bootable Mountain lion DVD for it.

    First you will need to Downl;oad and Save the Mt Lion install files. They are not on the system as it is. you need to use the Recovery HD partition to do the download to an external drive and then when the system goes to Reboot to start the actual install of Mt Lion on that external you Disconnect that external so the install doesn't start.
    Then once you boot back into the OS on the internal drive you Reconnect the external and use the program linked to in the above reply to Create a Mt Lion Install DVD or USB thumb drive.

  • What model # of 3 tb non fusion hard drive in late 2012 imac

    What Model # of Hard drive is Apple using for the 3 tb non fusion late 2012 imac.  27"
    If you have one, can you tell me what drive you have?
    Thanks

    polygoon wrote:
    <...>
    On the very first boot, I was confronted with a flashing prohibitory symbol and nothing more. My only option was to perform an online system restore. This seemed to work and I figured the machine shipped without OS X installed, as strange as that seemed.
    <...>
    I think that paragraph (actually, the first sentence) says it all.  I would have returned the system at that point.  By attempting to repair it yourself you may have caused further problems and certainly let Apple off of the hook for a bad system.
    My system specs are the same as yours. 
    3.4 GHz i7
    3TB Fusion Drive
    32GB 1600 MHz DDR3
    GeForce GTX 680MX 2048MB
    OS X 10.8.2 (12C2037)
    I have just over 1TB of my 3TB used up.  I just ran the test and received the following results.  Note that this is not the best test, just a typical one.
    Also my storage shows a total of 3.11 TB where yours shows 3 TB:
    And my Serial-ATA item shows the SSD where yours does not:
    So I'd say it is time for a visit to Apple.  Of course, you could try Apple phone support first if you think they could solve it over the phone.  However, as it failed with the first boot (the OS is shipped on the flash) in a way that suggested a valid OS wasn't found, I suspect something is wrong with the flash hardware and a phone call won't solve it.

  • [Guide] Install and run Windows 7/8 from an external drive without using bootcamp (works for late 2012 iMacs with 3TB drive)

    This is a copy of a post from my blog, you can also Read it on my blog...
    Introduction
    After I received my new iMac with a 3 TB Fusion Drive, I was disappointed when I realized that Bootcamp was not running on this model and prevented me from installing Windows on it. I wanted to take advantage of the powerful iMac hardware to play games but I couldn't.
    There are a few ways of working around this limitation, but I found most of them quite complex and most of the time they required formatting the internal hard drive or repartitioning it and go for a brand new installation of Mac OS X. I was not comfortable with that.
    But there is another way, and that is to install Windows on an external hard drive, using either USB or Thunderbolt. Personally I used a Lacie Rugged 1 TB drive that has both USB3 and Thunderbolt connectors. Both work very well.
    This guide may interest you if:
    You have an internal hard drive of more than 2TB and you can't run bootcamp at all (like late 2012 iMacs with a 3TB drive)
    You have limited space or you don't want to dedicate disk space on your internal hard disk drive to a Windows installation
    What this guide will make you do:
    It will make you erase all your data from your external USB3/Thunderbolt hard drive
    It will make you install Windows on your external USB3/Thunderbolt hard drive
    It will make you install bootcamp drivers
    What this will not make you do:
    It will not make you modify anything on your internal Mac hard drive
    It will not make you use or install the bootcamp assistant
    It will not activate the Preference Pane for the default boot drive. You have to boot by pressing the ALT key to manually select your boot drive each tome you want to boot Windows.
    What you'll need
    An external hard drive with a USB3 and/or Thunderbolt connector. This drive will be formatted so ensure you saved your files before going further. You can use either an SSD drive or a classic hard drive.
    A Windows 7 or 8 install DVD or ISO (check whether to install 32 or 64 bits versions based on your Bootcamp drivers) and the corresponding Windows serial number.
    One of the following:
    Mac OS X with a Windows 7 or 8 Virtual Machine (use VMWare Fusion or Parallels Desktop for example. Note: VMWare Fusion seems to have some issues with Thunderbolt and USB3. Plug your drive to a USB2 enclosure or hub to work around this -it worked for me-, or use another VM software) → Read the important note below
    A PC running Windows 7 or 8 → Read the important note below
    Windows AIK (free) running on your Virtual Machine or on your PC, or just the imagex.exe file (the rest of the Windows AIK package is not needed)
    Download imagex.exe
    Download Windows AIK (this download and installation is not required if you have already downloaded imagex.exe)
    Bootcamp drivers for your Mac. You can get these either by running bootcamp from your Mac (Applications > Utilities > Bootcamp) or, if like me you have a 3TB drive and can't run bootcamp at all, use the direct download links here.
    A USB stick to store your bootcamp drivers
    IMPORTANT: If your Mac has a 64 bits processor, your Windows Virtual Machine on OSX, your Windows installation on your PC and your Windows DVD/ISO must also be in 64 bits!
    Step by Step guide
    Step 1: Get the install.wim file
    If you have a Windows ISO file:
    Mount the ISO
    If you're on OS X: double click on the ISO file
    If you're on on Windows 7: Use a software like Virtual Clone Drive (free)
    If you're on Windows 8: double click on the ISO file
    Open the mounted drive, then go to the "sources" folder and locate the "install.wim" file. Save this file to C:\wim\ on your Windows installation or virtual machine.
    If you have a Windows DVD: open the "sources" folder on the DVD and locate the "install.wim" file. Save this file to C:\wim\ on your Windows installation or virtual machine.
    IMPORTANT: If instead of a "install.wim" file, you have "install.esd", you can not continue this step by step guide. And an ESD file can not be converted into a WIM file. So you must get a version of the Windows installation DVD/ISO that has an install.wim file.
    Step 2: Clean, partition and format your external hard drive
    On your Windows installation or virtual machine, plug in your external hard drive (can be plugged using USB2, USB3 or Thunderbolt at this stage)
    Open the command prompt in administrator mode (cmd.exe). To run it in administrator mode, right click on cmd.exe > Run as admin.
    Type the following and hit enter to open the disk partitioner utility:
    diskpartType the following and hit enter to list your drives:
    list disk
    This will display a list of disks mounted on your computer or virtual machine. Make sure your drive is listed here before you continue.Identify the disk ID of your external hard drive. Replace # by your real external disk ID in the command below:
    select disk #Clean all partitions by typing the following (warning: this will erase all data from your external drive!):
    clean
    Create the boot parition by typing the following followed by the enter key:
    create partition primary size=350
    This will create a 350MB partition on your external driveFormat the partition in FAT32 by typing the following:
    format fs=fat32 quick
    Set this partition to active by typing:
    active
    Assign a letter to mount this partition. We will use letter B in our example. If B is already used on your PC, replace B by any other available letter:
    assign letter=b
    Windows will detect a new drive and probably display a pop-up. Ignore that.Create the Windows installation partition using all the remaining space available on the external drive by typing the following:
    create partition primary
    Format the new partition in NTFS:
    format fs=ntfs quick
    Assign a letter to mount this partition. We will use letter O in our example. If O is already used on your PC, replace O by any other available letter:
    assign letter=o
    Windows will detect a new drive and probably display a pop-up. Ignore that.Exit the disk partitioner utility by typing:
    exit
    Step 3: Deploy the Windows installation image
    Still using the command prompt in admin mode (you didn't close it, did you? ), locate the imagex.exe file mentioned in the "What you'll need" section and access its folder. In our example, we have put this file in C:\imagex\imagex.exe
    Type the following and hit enter (remember to replace o: with the letter you have chosen in the previous step):
    imagex.exe /apply C:\wim\install.wim 1 o:
    This will take some time. The Windows installation image is being deployed to your external driveOnce done, type the following to create the boot section (remember to replace o: and b: with the letters you've chosen in the previous step):
    o:\windows\system32\bcdboot o:\windows /f ALL /s b:
    If you get an error message saying that you can't run this program on your PC, then most probably you are running on a 32 bits installation of windows and you're trying to deploy a 64 bits install. This means you did not read the important notes in the beginning of this guide
    If you get an error message on the options that can be used with the BCDBOOT command, then it's because you're installing Windows 7, and the /f option is not supported. If that is the case, remove /f ALL from the command and retry.
    Step 4: Boot from your external drive and install Windows
    Plug in your external drive:
    If you've done all the previous steps from a Windows PC, unplug your external drive from your PC and plug it to your Mac, either on a USB3 or a Thunderbolt port.
    If you've done all the previous steps from your Mac using a Virtual Machine, ensure the external drive is plugged in to a USB3 or Thunderbolt port. Using USB2 should also work but you'll get very poor performance so I don't recommend doing that.
    Reboot your Mac and once the bootup sound is over, immediately press the ALT (option) key and release it only when the boot drives selection screen appears. If you did not get the boot drives selection screen, reboot and try again. The timing to press the ALT (option) key is quite short. It must not be too early or too late.
    On the boot selection screen, choose "Windows" using the arrow keys on your keyboard, then press enter.
    The Windows installation starts. Follow the on-screen instructions as normal. The installation program will restart your computer one or 2 times. Don't forget to press ALT (option) right after the bootup sound, and boot on Windows again each time to continue the installation.
    Step 5: Install bootcamp drivers
    Once the Windows installation is complete, plug in the USB stick where you stored the bootcamp drivers (see "what you'll need" section), open it and right click on "setup.exe" and select "Run as admin". Follow the on-screen instructions.If you have an error saying that you can't run this program on this PC, obviously you have installed a 32 bits version of Windows and the bootcamp drivers for your Mac are made for a 64 bits version. You have to restart the whole guide and make sure to get a 64 bits version of Windows this time!
    Once the bootcamp drivers are all installed, reboot and press ALT (option) after the bootup sound to boot on Windows again. And Voilà, you have Windows installed on your USB3/Thunderbolt drive running on your Mac.
    Now each time you want to boot on Windows, press and hold the ALT (option) key after the startup sound and select "Windows", then press Enter.

    Hi i'm trying to follow your guide, I installed windows 8 on bootcamp to do it planning to remove it after the operation is done, but i get stuck at part 3: every command i give to imagex i get a pop-up ftom windws asking how do I want to open this kind of file install.wim and imagex does nothing, what do i have to do to stop those pop-ups?

  • I have a late 2012 iMac running osx 10.8.5.  I keep losing access to my internal hard drive.  I can reboot and regain access and it will last for a few minutes or hours.  Disk utility does not seems to help.

    I have a late 2012 iMac with an I5 precessor running OSX 10.8.5 and a 1tb internal hard drive.  I keep losing access to the internal hard drive/startup disk.
    I can reboot and everything operates as normal for a few minutes or hours but then I lose all access again to anything on the hard drive.  The computer is still up and running but no files can be accessed and certain websites cannot be acessed even though internet access appears to be normal.  Disk utility can only find permission errors related to iTunes which can be repaired only to come back at the next scan (I would not think permission errors would have anything to do with the hard drive crashing).  It does not seem to matter what program I am using at the time access is lost and it can lose access sometimes right after reboot when no program is running.

    You will need to boot into the Recovery Volume (command - R on a restart or hold down the option/alt key during restart and select it) to run Disk Utility/Disk Repair.

  • Installing Adobe Creative Suite - NEW 21" late 2012 iMac - Don't want to buy superdrive!! How can I trick the computer into thinking the USB drive is a CD?

    I've got a new late 2012 imac, but I realize yes it doesn't come with a compact disc drive. I have an Adobe Creative Suite CS5.5 install disc with all the information included (serial). I copied the contents of the CD into a USB Flash drive, but I can't get it to install because it is looking for the content on the CD. Since I don't want to have to buy the external Superdrive!! How do I convince the computer into installing adobe via the files on the flash drive?

    Your question makes perfect sense to me. I would contact Adobe Supptrt Services from the contacts listed here:
    http://helpx.adobe.com/creative-suite/kb/install-creative-suite-5-cs5.html
    You will need adobe current serial number.
    I hope you'll post here with your results. I've interested know what happens.

  • Issue with Fusion drive (Late 2012 iMac)

    I have a late 2009 iMac that has been backed up with Time Machine.  I recently picked up a late 2012 iMac with the 1TB Fusion drive.  When I first plugged in my Time Machine drive, I was asked if I'd like to transfer my files over.  I did, and everything was working fine.  I was using about 800GB of my 1.12TB Fusion Drive.
    I recently decided to add a new partition to the Macintosh HD in order to put Windows on it. I did this through the Disk Utility.  I noticed that it was taking an inordinately long time to create this partition.  Finally, I realized that the Disk Utility was locked up.  I was forced to reboot to fix it.
    I went back and tried again and I got an error stating that the drive had errors and I couldn't make a new partition.  So I attempted to "repair disk".  That gave me an error "Error: This disk needs to be repaired using the Recovery HD. Restart your computer, holding down the Command key and the R key until you see the Apple logo. When the OS X Utilities window appears, choose Disk Utility."
    So I rebooted into recovery.  Recovery was absolutely no help either.  It couldn't repair the drive, even though it had me erase all the data.  So I downloaded 10.8.2 on my Mac Mini and made a boot disk out of my Thunderbolt drive.  I booted into OS X and tried again to repair, thinking it would work since the Fusion was no longer the boot drive.  No such luck.  I then booted back into recovery and had recovery download and install a fresh version of 10.8.2.  2+ hours into the download/install, I get an error that says "OS X couldn't be installed because the disk Macintosh HD is damaged and can't be repaired."
    Ok, so as a final attempt, I had recovery use my time machine to start over.  That worked, kinda.  It now shows my Fusion drive as being completely filled in Disk Utility (49KB remains, only about 800 or so was used before), and Finder shows the Fusion drive as being 860GB capacity with 837GB used.  I still can't repair the disk.  And now my Time Machine acts like I'm working on an entirely new computer and says there's not enough room on the drive unless I format my Time Machine drive and start over.
    Yeah, TL;DR, but does anybody have any idea how I can get this issue resolved?  I wonder if doing the TM restore from my 2009 iMac may have introduced the non-Fusion version of Disk Utilities that doesn't know how to fix my issue.

    Yes I have AppleCare.
    Before that I've now made a bootable disk and tried to repair the internal drive, but this was not possible.
    I have a Time Machine backup, but excluded some temporary folders.
    Is there a way to access these folders in case they aren't in a damaged area?
    Maybe using "Target Disk mode"?
    I've never done this before.
    This Mac has no FireWire, but we have an adaptor for Thunderbolt to FireWire - could I connect an older Mac with FireWire using this adaptor for Target Disk Mode?
    Many thanks.

  • Late 2012 iMac does't see the thunderbolt ports

    late 2012 imac 3.4 i7 v10.8.5 doesn't see the thunderbolt ports in system report. both ports were working previously ( 2 wd mybookTB duos with raid 1 ). now neither port works.
    TB port does work with TB to FW adapter. help.

    The following article(s) may help you.
    AirPlay Mirroring
    Troubleshooting AirPlay
    Troubleshooting Wi-Fi networks and connections
    Recommended Wi-Fi settings
    Wifi Diagnostic Software (for Mac users)
    You may also find some help on this page, where I’ve collected some of the more unusual solutions to network issues.
    Intermittent problems are often a result of interference. Interference can be caused by other networks in the neighbourhood or from household electrical items.
    You can download and install iStumbler (NetStumbler for windows users) to help you see which channels are used by neighbouring networks so that you can avoid them, but iStumbler will not see household items.
    Refer to your router manual for instructions on changing your wifi channel or adjusting your multicast rate.
    There are other types of problems that can affect networks, but this is by far the most common, hence worth mentioning first. Networks that have inherent issues can be seen to work differently with different versions of the same software. You might also try moving the Apple TV away from other electrical equipment.

  • Airplay Problem with Late 2012 iMac

    Hi all,
    Since I bought the iMac, I was never able to function the Airplay.
    Spend hours with tech support on the phone, but stil not resolved.
    These is no option in Display Preference at all.
    Try everything with router, change network, still nothing.
    The weird part is, Airplay does work on iTunes.
    I also tried install fresh OSX (Mountain Lion), still the same.
    I am now on Mavericks, hoping that new OS will solved it, still nothing.
    Is there anyone that know what else to do before I bring the iMac to the store?
    Cheers,
    Aaron

    Welcome to Apple Support Communities
    It looks like you have an unsupported iMac. Are you sure you have got a Late 2012 iMac? You can check it in  > About this Mac > More Info

Maybe you are looking for

  • Using variables in a java.properties file

    Hi, I have a .properties file that I'm using to configure an app. I was wondering if there is a way to set a property = to an already defined property and more. So for example: app.siteroot=c:\tomcat\webapps\myapp app.templatefolder= app.siteroot + \

  • Query monitoring using AUDIT

    Hi all, DB version : 11.2.0 OS version : RHEL 5.5 I have enabled auditing at the database level. Can anyone let me know how could i find out which query was executed by the user 2 hours before. I am not sure how could i find the query using AUDIT. Ju

  • I have just purchased CC on a monthly paid deal and now unable to use it.

    Previously had CC on a trial that had expired on a different email address. Now when I try and load CC on the new account and email I just get a 404 This Page is not available message. This is an urgent issue as have paid and cannot access the apps a

  • Zebra (105SL) printing problem

    Hi experts, I'm using the ZEBRA printer 105SL when i was using the output device L001(Local).i'm getting correct output, but the same time i was using the output device L303(Canada).i'm getting different output. what's the problem? whether it is rela

  • Monthly view bug - creating event

    I am able to create an event using the new quick event box at the top where you type in your meeting as regular text, however, double-clicking a day in Monthly view does not invoke a new event.  Also, when I right-click on a day and select "New Event