Is MacBook Pro 2012's RAM Memory extendable more than 8GB?

I have extended my MacBook Pro's RAM Memory upto 10 GB and its working and showing In its activity normal is MacBook extendable to 10 GB ?

MacBook Pro: How to remove or install memory - Apple Support
Here is the links for the RAM Upgrade Spec requirements needed for your specific model. It has a full comparison and spec guideline on each model and year dated

Similar Messages

  • Macbook pro runs slow, sometimes it is more than a minute to load a webpage and sometimes freezes.

    My MacBook Pro is running very slowly, sometimes more than a minute to open a webpage or access a link on the page.  Using Safari and sometimes it freezes and the force quit window doesn't appear using option-command-escape.  Then only holding down the power button shuts down the computer.  Thanks for any help.

    Please read this whole message before doing anything.
    This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
    Step 1
    The purpose of this step is to determine whether the problem is localized to your user account.
    Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
    While logged in as Guest, you won’t have access to any of your documents or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this behavior; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
    Test while logged in as Guest. Same problem?
    After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
    *Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
    Step 2
    The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
    Please take this step regardless of the results of Step 1.
    Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
    Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
    Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
    The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
    Test while in safe mode. Same problem?
    After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of Steps 1 and 2.

  • Macbook Pro Airport won't connect for more than a few seconds on battery

    My Macbook Pro will not stay connected to my work Wifi lan running on cisco AP1213G. It connects for a few seconds then drops the connecion whenever it's on battery power. On mains power it connects after saying there was an error but will occasionally not pass any trafic
    SSID is hidden, network uses WPA.
    AirPort Card Information:
    Wireless Card Type: AirPort Extreme (0x168C, 0x86)
    Wireless Card Locale: Worldwide
    Wireless Card Firmware Version: 0.1.24
    Current Wireless Network: lonschap01-lan
    Wireless Channel: 5
    Any ideas?
    Macbook Pro   Mac OS X (10.4.7)   2Gb Ram, 100Mb HD 2Gz Core Duo.

    Certain settings, e.g. printer sharing, can prevent sleep. There are other possibilities as well. See this kbase article:

  • MacBook Pro takes much time for Shutdown (More than 1 min.)

    I have a MacBook Pro, and some weeks ago, it takes much time for shutdown.
    I've tried to install the 10.5.2 update, but nothing solves.
    My mac takes for shutdown 1 min & 30 seconds every time. I don't understand. Why?
    What can I do? I tried to repair permissions and reset the PMU, but the problem still there.
    Help me! Please!
    Sorry, but I'm spanish and it's possible that I've made more mistakes writing in English.

    Thanks. I tried to dissable an EyeTv option, then EyeConnect don't appears in the Activity Monitor. This is the result:
    Now, my MacBook Pro takes only 35 seconds for shutdown. I think is better than yesterdey, but is more than the 5 seconds that you described in the last post. Is 35 seconds a good time? In this 35 seconds, I only can see the background image, without icons and without the finder menu bar. After 35 seconds, Mac is off.
    How can I disable iDisk sync? I have a free mac Account, but is expired and then I can't use iDisk, only the name in iChat. But, is iDisk enabled?

  • My macbook pro is running slow and freezing more than once a minute.

    I do not know much about computers, but I do know this is not normal for my computer.
    Processor  2.9 GHz Intel Core i7
    Memory  8 GB 1600 MHz
    Graphics  Intel HD Graphics 4000 1024 MB
    Software  OS X 10.9.5
    So about two days ago I was using the computer and noticed that it was freezing and giving me the little spinning circle of evilness. This happens every time I open anything, try to type(which is making this an extremely long process), load a screen in the MMORPG I play(Or even just general play time).  I can be doing anything, and the computer will freeze for anywhere between 5 seconds, and up to 10 minutes. Things normally continue on fine, or sometimes my internet screens fail to load. I have ran ccleaner and cleaned up a few things, and then ran AVG which found quite a few files or something called Genio which I deleted. I have also upgraded all the latest updates that I can, but now when I try to open the app store to double check to see if there are any more updates, and it will not open, it freezes. I have reset my comps system management controller, and I have reset my PRAM. My desktop is not cluttered, and I'm more confused than ever.
    If there is any more information I can give, I will try. Please help??

    1. This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve the problem. But with the aid of the test results, the solution may take a few minutes, instead of hours or days.
    The test works on OS X 10.7 ("Lion") and later. I don't recommend running it on older versions of OS X. It will do no harm, but it won't do much good either.
    Don't be put off by the complexity of these instructions. The process is much less complicated than the description. You do harder tasks with the computer all the time.
    2. If you don't already have a current backup, back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. Backup is always a must, and when you're having any kind of trouble with the computer, you may be at higher than usual risk of losing data, whether you follow these instructions or not.
    There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
    3. Below are instructions to run a UNIX shell script, a type of program. As I wrote above, it changes nothing. It doesn't send or receive any data on the network. All it does is to generate a human-readable report on the state of the computer. That report goes nowhere unless you choose to share it. If you prefer, you can act on it yourself without disclosing the contents to me or anyone else.
    You should be wondering whether you can believe me, and whether it's safe to run a program at the behest of a stranger. In general, no, it's not safe and I don't encourage it.
    In this case, however, there are a couple of ways for you to decide whether the program is safe without having to trust me. First, you can read it. Unlike an application that you download and click to run, it's transparent, so anyone with the necessary skill can verify what it does.
    You may not be able to understand the script yourself. But variations of it have been posted on this website thousands of times over a period of years. The site is hosted by Apple, which does not allow it to be used to distribute harmful software. Any one of the millions of registered users could have read the script and raised the alarm if it was harmful. Then I would not be here now and you would not be reading this message. See, for example, this discussion.
    Nevertheless, if you can't satisfy yourself that these instructions are safe, don't follow them. Ask for other options.
    4. Here's a general summary of what you need to do, if you choose to proceed:
    ☞ Copy a particular line of text to the Clipboard.
    ☞ Paste into the window of another application.
    ☞ Wait for the test to run. It usually takes a few minutes.
    ☞ Paste the results, which will have been copied automatically, back into a reply on this page.
    These are not specific instructions; just an overview. The details are in parts 7 and 8 of this comment. The sequence is: copy, paste, wait, paste again. You don't need to copy a second time.
    5. Try to test under conditions that reproduce the problem, as far as possible. For example, if the computer is sometimes, but not always, slow, run the test during a slowdown.
    You may have started up in "safe" mode. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.
    6. If you have more than one user, and the one affected by the problem is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this section doesn’t apply. Don't log in as root.
    7. Load this linked web page (on the website "Pastebin.") The title of the page is "Diagnostic Test." Below the title is a text box headed by three small icons. The one on the right represents a clipboard. Click that icon to select the text, then copy it to the Clipboard on your computer by pressing the key combination command-C.
    If the text doesn't highlight when you click the icon, select it by triple-clicking anywhere inside the box. Don't select the whole page, just the text in the box.
    8. Launch the built-in 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 and start typing the name.
    Click anywhere in the Terminal window to activate it. Paste from the Clipboard into the window by pressing command-V, then press return. The text you pasted should vanish immediately.
    9. If you see an error message in the Terminal window such as "Syntax error" or "Event not found," enter
    exec bash
    and press return. Then paste the script again.
    10. If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. If you don't know the password, or if you prefer not to enter it, just press return three times at the password prompt. Again, the script will still run.
    If you're not logged in as an administrator, you won't be prompted for a password. The test will still run. It just won't do anything that requires administrator privileges.
    11. The test may take a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. While it's running, a series of lines will appear in the Terminal window like this:
    [Process started]
            Part 1 of 8 done at … sec
            Part 8 of 8 done at … sec
            The test results are on the Clipboard.
            Please close this window.
    [Process completed]
    The intervals between parts won't be exactly equal, but they give a rough indication of progress. The total number of parts may be different from what's shown here.
    Wait for the final message "Process completed" to appear. If you don't see it within about ten minutes, the test probably won't complete in a reasonable time. In that case, press the key combination control-C or command-period to stop it and go to the next step. You'll have incomplete results, but still something.
    12. When the test is complete, or if you stopped it because it was taking too long, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.
    At the top of the results, there will be a line that begins with the words "Start time." If you don't see that, but instead see a mass of gibberish, you didn't wait for the "Process completed" message to appear in the Terminal window. Please wait for it and try again.
    If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.
    13. When you post the results, you might see an error message on the web page: "You have included content in your post that is not permitted," or "The message contains invalid characters." That's a bug in the forum software. Please post the test results on Pastebin, then post a link here to the page you created.
    14. This is a public forum, and others may give you advice based on the results of the test. They speak for themselves, not for me. The test itself is harmless, but whatever else you're told to do may not be. For others who choose to run it, I don't recommend that you post the test results on this website unless I asked you to.
    Copyright © 2014, 2015 by Linc Davis. As the sole author of this work (including the referenced "Diagnostic Test"), I reserve all rights to it except as provided in the Use Agreement for the Apple Support Communities website ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

  • I have macbook pro 2012. I 'm using netbeans 7.2 for using programming. It took about 700mb when I use this application.

    I have macbook pro 2012 4gb ram. I 'm using netbeans 7.2 for using programming. It took about 700mb.

    I'm runing out of memeory when I use other applicaiton such as safari with netbens and inactive memory not clearing when not enough memory for other application.Why is this happing? Does netbens application leak memory?

  • Macbook pro 2012 is slower than macbook air 2012

    I have found that my macbook pro 2012 13" (non retina) is slower than macbook air 13" my co-workers own. all macbooks have same softwares and versions.
    Macbook pro has better processor but Macbook Air is faster. I guess it is because of Hard drive in pro vs SSD in Air. so my questions are:
    Does anyone have a same exprience?
    and if I change my HDD to SSD can i beat macbook pro in speed?
    waiting for your quick answers because I am feeling bad these days.
    Thanks in advance

    Take a look at my one and only user tip - Upgrading Your MacBook Pro with a Solid State Drive.
    If you have any questions after reading it, just call back. The tip really needs to be updated but I just haven't gotten around to doing so... so many different drives available now!

  • My MacBook pro 2012 Mountain Loin 8.2 don't clear the inactive memory automatically when memory needed for other program so I get page outs.

    My MacBook Pro 2012 Mountain Loin 8.2 doesn't clear the inactive memory automatically when memory needed for other program so I get page outs. There are much inactive memory when page outs. Why my mac does this?

    That's completely normal. If other programs require memory then the system will reallocate Inactive RAM as needed. Page Outs don't mean anything.
    About OS X Memory Management and Usage
    Reading system memory usage in Activity Monitor
    Memory Management in Mac OS X
    Performance Guidelines- Memory Management in Mac OS X
    A detailed look at memory usage in OS X
    Understanding top output in the Terminal
    The amount of available RAM for applications is the sum of Free RAM and Inactive RAM. This will change as applications are opened and closed or change from active to inactive status. The Swap figure represents an estimate of the total amount of swap space required for VM if used, but does not necessarily indicate the actual size of the existing swap file. If you are really in need of more RAM that would be indicated by how frequently the system uses VM. If you open the Terminal and run the top command at the prompt you will find information reported on Pageins () and Pageouts (). Pageouts () is the important figure. If the value in the parentheses is 0 (zero) then OS X is not making instantaneous use of VM which means you have adequate physical RAM for the system with the applications you have loaded. If the figure in parentheses is running positive and your hard drive is constantly being used (thrashing) then you need more physical RAM.
    Adding RAM only makes it possible to run more programs concurrently.  It doesn't speed up the computer nor make games run faster.  What it can do is prevent the system from having to use disk-based VM when it runs out of RAM because you are trying to run too many applications concurrently or using applications that are extremely RAM dependent.  It will improve the performance of applications that run mostly in RAM or when loading programs.

  • How do I upgrade memory on my MacBook Pro 2012

    I installed Yosemite and now my MacBook Pro (2012) has slowed dramatically. I have two memory slots, total 8GB.

    You should have enough RAM with 8gb. There may be other reasons your computer is slow.
    You can upgrade to a maximum of 16gb. Visit the OWC site for more info.

  • My memory is 4gb for my macbook pro what is ram??

    My memory is 4gb for my macbook pro what is ram??

    RAM = Random Access Memory
    the 4GB you quoted is your system memory, people say get as much as you can as it attributes to the performance of your system with major impact.
    other people disagree.. 
    quote: "640K ought to be enough for anybody." - Bill Gates, 1981
    4GB is approx 4,194,304 K

  • Can I take RAM from MacBook Pro 2012 and install in MacBook 2010

    I am upgrading a MacBook Pro 2012 from 8G to 16GB of RAM
    Can I take the old 2x4G RAM DIMMS and install them in my daughters White MacBook 13" 2010 (7,1)

    Your 2012 tech specs state 1600 MHz:
    whereas the 2010 white Macbook takes 1066 MHz:
    So, the answer would be no.

  • Looking to purchase a new 13" MacBook Pro with 512GB SSD memory and 8GB ram.  Main purpose is to run Final Cut Prowithout being at my desk.  Is there's need to upgrade to the 16GB to make Final Cut Prorun more smoothly?

    I was planning on buying a new 13 inch MacBook Pro with 512 GB memory and 8GB RAM. The main purpose for this purchase Is to be able to run Final Cut Pro anywhere I want to. Should I upgrade to 16 GB of RAM with the added expense and wait time or is that overkill?

    8GB should be plenty  .  .  .  though as with most things in life, it all depends on exactly what you are doing. If you intend to edit long, highly complex projects loaded with effects and multicam clips you can't get enough RAM.
    For over 3 years, I and many others, have been  using 4GB with no problems.

  • PLEASE HELP me select new internal hard drive for Macbook Pro 2012 (non-retina)

    Good afternoon.
    I just bought a Macbook Pro 2012 (non-retina) 15 inch from a friend.  I think it is running Mountain Lion (has not been upgraded to Mavericks yet), and has iLife on it.  It came with the stock 500 gb 5400 rpm internal hard drive.  At home, I only have the Snow Leopard OS installation Cds and a copy of iLife 2011 installation Cds.  I am going to buy 16 gb of RAM from Other World Computing to install.
    I want to replace the hard drive with a 1 tb hard drive, preferably something that is $100 or less.
    I talked to Other World Computing (OWC) and looked at the Data Doubler Option to replace the optical drive with a Solid State drive, but decided that for now I want to keep the optical drive inside the computer for portability issues.
    I know that Solid State drives are better, but they are still too small, and I want the ease and portability of a 1 tb size INSIDE my computer.
    Initially I was going to order this from Other World Computing: 1.0TB 2.5" HGST Travelstar 7K1000 7200RPM SATA 6Gb/s 9.5mm Notebook Drive 32MB Cache. *'New' Factory Replacement with 2+ Year HGST Warranty*    As of April 4, 2014 it's on sale for $79
    But then I started reading some of the discussions online and thought maybe I should get a hybrid solid state drive?
    I saw on Amazon the Seagate 1TB Solid State Hybrid Drive SATA 6Gbps 64MB Cache 2.5-Inch ST1000LM014  It's on sale for $94.
    But according to some reviews, this Seagate has a platter that is only 5400rpm, unlike the previous Seagate Momentum that has a platter speed of 7200rpm.
    How reliable are the Seagate, versus a Toshiba or Western Digital or Hitachi or something else?
    Here are my questions about replacing the hard drive:
    1.  Is a hybrid solid state drive going to need some kind of special formatting after I put it into the macbook so that I can put the operating system on it?
    2.  Is a "normal" platter hard drive more reliable than a hybrid solid state drive?
    3.  Is there any additional driver or special software that I have to install for a hybrid solid state drive?
    4.  Currently there is no personal data stored on the computer.  Can I just put the new hard drive in, and then insert the snow leopard install cd?
    5.  If I install snow leopard, can I just go to the App store and get the free upgrade to Mavericks?
    6.  If I want to do the "Data Doubler" option in the future and add a normal Solid State drive into my computer, will it have trouble interacting with the 1 tb hybrid solid state drive?
    I would love to get some recommendations about the smartest option to upgrade my hard drive with something that will be fast (I edit lots of photos) and large (1 tb) that isn't going to cost too much.  I don't know much about the different brands or options (and there are so many listed in tons of online reviews), that I got really overwhelmed and confused by the info out there.
    I would really appreciate any help and advice.  I've never switched out a hard drive before.
    PLEASE HELP !!!  Thanks!
    Here is the "About this Mac" Info:
    Macbook Pro 15-in Mid 2012
    Model Identifier: MacBookPro9,1
    Processor: 2.3 GHz Intel Core i7
    Memory: 4 GB 1600 MHz DDR3
    Software: OS x 10.8.5
    Storage (Hard drive): APPLE HDD ST500LM012 Media, Rotational, SATA, GPT (GUID Partition Table)

    1.  Is a hybrid solid state drive going to need some kind of special formatting after I put it into the macbook so that I can put the operating system on it?
    The boot drive, regardless of what it is, needs to be formatted as Mac OS Extended (Journaled).  This is standard with OS X.
    2.  Is a "normal" platter hard drive more reliable than a hybrid solid state drive?
    There are arguments pro and con.  Bottom line, SSD's and hybrid drives are still quite expensive per GB than standard hard drives.  If you have the bucks and are a speed demon, go ahead.   I have better use for my money.   Standard hard drives are mechanical and may wear out over time.  But even though SSDs are not mechancial, they can still go bad and ultimately they even have a limit to their write capacity.  The jury is still out on this debate.
    3.  Is there any additional driver or special software that I have to install for a hybrid solid state drive?
    4.  Currently there is no personal data stored on the computer.  Can I just put the new hard drive in, and then insert the snow leopard install cd?
    You can physically put the hard drive in but probably not install Snow Leopard on this MBP.
    The mid-2012 MacBookPro9,1 models came with Lion 10.7.3 (11D2097) preinstalled.   It is very unlikely you would be able to install Snow Leopard on it.  Historically you cannot install a version of OS X that is earlier than the version that came with your Mac (even if you replace the hard drive).
    5.  If I install snow leopard, can I just go to the App store and get the free upgrade to Mavericks?
    Not via Snow Leopard on this MBP.  See my response to #4.
    6.  If I want to do the "Data Doubler" option in the future and add a normal Solid State drive into my computer, will it have trouble interacting with the 1 tb hybrid solid state drive?
    No.  They are completely independent of each other; they are just independent storage units (drives) and their RAM does not interact.

  • Why Does Retina MacBook Pro (2012) Suddenly Hibernate With Lid Open?

    I'd like to know why my Retina MacBook Pro (2012) at certain times suddenly go into Hibernate mode when I'm actively using it with the lid open and what I can do to prevent this.
    I know this is hibernate because of what I see in the Console logs and the fact that I can't trigger a wake by using the keyboard/trackpad/mouse.  Only the power button causes it to wake up.
    This usually happens when I wake it from sleep and plug it into an external monitor via HDMI to HDMI connection.   The lid is open and I use both displays.    This happens about 30 seconds to a minute after I wake from sleep.  At the time I'm not plugged into the power supply because I believe it's generally a good idea to let the batter drain and the recharge it.  The last time this happened it was about 35% to 40% charged.
    Hardware Overview:
      Model Name:    MacBook Pro
      Model Identifier:    MacBookPro10,1
      Processor Name:    Intel Core i7
      Processor Speed:    2.6 GHz
      Number of Processors:    1
      Total Number of Cores:    4
      L2 Cache (per Core):    256 KB
      L3 Cache:    6 MB
      Memory:    8 GB
    OS X Yosemite (all latest updates installed)
    {some 3rd party software}
    Let me know if you need more information.
    For the gory details of what I see in system.log, read on:
    This is about the time the hibernate happens.  I've replaced my laptop's name with {COMPUTER NAME}
    Mar 20 18:29:26 {COMPUTER NAME} identityservicesd[375]: <IMMacNotificationCenterManager: 0x7f87d510c9e0>: notification observer:   notification: __CFNotification 0x7f87d5210a90 {name = _NSDoNotDisturbEnabledNotification}
    Mar 20 18:29:26 {COMPUTER NAME} identityservicesd[375]: <IMMacNotificationCenterManager: 0x7f87d510c9e0>:    NC Disabled: NO
    Mar 20 18:29:26 {COMPUTER NAME} identityservicesd[375]: <IMMacNotificationCenterManager: 0x7f87d510c9e0>:   DND Enabled: YES
    Mar 20 18:29:26 {COMPUTER NAME} identityservicesd[375]: <IMMacNotificationCenterManager: 0x7f87d510c9e0>: Updating enabled: NO   (Topics: (null))
    Mar 20 18:29:26 {COMPUTER NAME} WindowServer[218]: device_generate_desktop_screenshot: authw 0x7fba81c2e940(2000), shield 0x7fba81c35bd0(2001)
    Mar 20 18:29:27 --- last message repeated 1 time ---
    Mar 20 18:29:27 {COMPUTER NAME} WindowServer[218]: device_generate_lock_screen_screenshot: authw 0x7fba81c2e940(2000)[0, 0, 1920, 1080] shield 0x7fba81c35bd0(2001), dev [1920,1080]
    Mar 20 18:29:27 {COMPUTER NAME}[1] ( Service "" tried to hijack endpoint "" from owner:
    Mar 20 18:29:30 --- last message repeated 1 time ---
    Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: PM response took 4741 ms (30, powerd)
    Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: ARPT: 1632.007298: AirPort_Brcm43xx::powerChange: System Sleep
    Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: ARPT: 1632.007302: wl0: powerChange: *** BONJOUR/MDNS OFFLOADS ARE NOT RUNNING.
    Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: [0x1b014fb000, 0x19000000]
    Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: [0xd8ec7000, 0x19000000]
    Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: [0x1369ac0000, 0xe000000]
    Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: [0x0, 0x0]
    Mar 20 18:29:31 {COMPUTER NAME} kernel[0]: hibernate image path: /var/vm/sleepimage
    And when I wake it up by repeatedly pressing the power button:
    Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: hibernate_newruntime_map time: 0 ms, IOHibernatePollerOpen(), ml_get_interrupts_enabled 0
    Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: IOHibernatePollerOpen(0) 19 ms
    Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: hibernate_machine_init reading
    Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: PMStats: Hibernate read took 355 ms
    Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: hibernate_machine_init pagesDone 212628 sum2 2c66736a, time: 355 ms, disk(0x20000) 447 Mb/s, comp bytes: 57749504 time: 55 ms 985 Mb/s, crypt bytes: 157388800 time: 67 ms 2228 Mb/s
    Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: Wake reason: EC.PowerButton (User)
    Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: vm_compressor_fastwake_warmup (7450 - 12878) - starting
    Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: Previous sleep cause: -60
    Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: Previous shutdown cause: 5
    Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: AppleThunderboltNHIType2::prePCIWake - power up complete - took 0 us

    This happened again at about 31% power, again unplugged.   Previously, I had plugged in the power before pressing the power button, but this time I pressed the power button before plugging in.  The display showed me the out of power icon.  Only on plugging it back in was I able to power up the laptop again.
    Is it possible there's a bug either with the displayed power or how remaining power is detected?

  • How do I secure erase macbook pro 2012 retina for resale

    How do I secure/erase and set to factory settings 15" Macbook Pro 2012 retina) for resale?

    Install or Reinstall Lion/Mountain Lion from Scratch
    Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
    Boot to the Recovery HD:
    Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
    Erase the hard drive:
      1. Select Disk Utility from the main menu and click on the Continue button.
      2. After DU loads select your startup volume (usually Macintosh HD) from the
          left side list. Click on the Erase tab in the DU main window.
      3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
            the Security button and set the Zero Data option to one-pass. Click on
          the Erase button and wait until the process has completed.
      4. Quit DU and return to the main menu.
    Reinstall Lion: Select Reinstall Lion/Mountain Lion and click on the Install button.
    Note: You will need an active Internet connection. I suggest using Ethernet if possible
                because it is three times faster than wireless.
    Be sure you disable or turn off iCloud. Deauthorize the computer in iTunes. Remove any Firmware Passwords you may have configured. Turn off FileVault if enabled.
    What to do with iCloud before selling your computer

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