As I wrote earlier install Windows on iMAC/ MACBOOK PRO/ AIR, MAC mini is not a big deal. But after Windows installations this operating system will be loaded every time you turn it on by default. And if you want to boot MAC OS, you need to hold down the ALT key when turning on the iMAC/MACBOOK PRO/AIR, MAC mini to then select booting MAC OS. Agree, this is very inconvenient, especially if you mainly work on MAC OS and only occasionally need to boot into Windows. In order to correct the situation and select MAC OS as the default boot, you need to follow a number of simple steps.
So, our goal is on iMAC/ MACBOOK PRO/ AIR, which has a second operating system installed Windows system make MAC OS boot by default. To do this, you need to boot your MAC device under MAC OS. To do this, restart your iMAC/ MACBOOK PRO/ AIR, MAC mini and at the very beginning of boot, press and hold the ALT key. As a result, the OS boot selection window should appear. Choose MAC OS.
Select "Boot Volume".
In the boot volume window, select which operating system will boot by default. IN in this example This is a MAC (Mavericks OS X 10.9.5). Just click on it, below in the menu you will see the line “You have chosen...” - this confirms your choice.
Unfortunately, any computer user may encounter a problem when the operating system Mac won't boot and seems to freeze during the loading process. As a rule, it looks like this: the computer starts to boot, the Apple logo appears on the screen as usual, but then nothing happens - the system does not boot, and the computer does not respond to anything other than a forced shutdown with the power button. In other cases, a loading indicator may appear under the Apple logo (similar to the one shown in the image above), but then nothing happens. Why does this happen and how can you fight it? Is it required in such cases? Let's figure it out in order.
Why Mac won't boot and freezes at the Apple logo
The reasons why the Mac stopped booting can be different:
- Operating system failure due to damage to important system files(for example, in case of incorrect installation of a system component update, or installation of a new OS).
- Damage to system files due to malware.
- Lack of free space on the computer boot volume.
- Inability to detect the boot volume due to a software error or cable damage hard drive(a clear symptom of this is).
- Malfunction of hardware components (damage to the hard drive or SSD, defective video chip, etc.).
Mac won't boot and freezes. What to do?
Depending on the reasons for the problem, there are different variations of its solution. Some you can try to implement yourself, while others can only be implemented by a specialist at a service center. Below we will give some recommendations on what you can do if your Mac stops booting and is stuck at the Apple logo or loading indicator. Let's start with something simple.
Boot in Safe Mode
Few people know that the MacOS operating system allows you to boot into Safe mode, which allows you to identify various software errors in the system. IN Safe mode mode, only the system kernel with the main important functions is loaded, and when the computer boots in safe mode, the file system is checked for errors and, if possible, eliminated. Therefore, in most mild cases, booting your Mac into Safe Mode and then booting correctly soft reboot may solve the problem if your Mac won't boot and freezes.
In order to boot your Mac (it doesn't matter whether it's a MacBook, iMac or Mac Mini) in safe mode, you need to When you turn on the computer, hold down the "Shift" key on the keyboard and hold until the loading indicator bar appears. Please note that loading macOS in safe mode takes significantly longer than standard operating system loading, so we recommend being patient.
Correcting Errors Using Disk Utility
Disk Utility is a specialized application for working with boot volume and file MacOS system, allowing, in addition to standard features formatting or partitioning the disk, checking the disk and boot partition for errors and correct access rights to system files.
To run Disk Utility if your computer won't boot normally, you need to boot from the built-in MacOS recovery partition. For this it is necessary When you turn on the computer, press the Alt/Option (⌥) button and hold it until the boot partition selection screen appears, then select the Recovery partition. Force booting from MacOS recovery partition can be done by pressing a keyboard shortcut Command (⌘)-R when you start the computer.
When the recovery partition is launched, you need to select "Disk Utility":
In Disk Utility, select the "First Aid" section and click "Run" (relevant for MacOS versions El Capitan and Sierra), or manually select "Check Disk" and "Check Permissions" (available for OS X Yosemite and older). If, at the end of the process, the disk utility reports that the disk is good or restored, then try restarting the computer and check the loading of the operating system again. If the errors found are successfully corrected, MacOS should boot correctly in normal mode.
If, during the verification process, the disk utility displays an error message that cannot be corrected, you should think about how to save important files and documents, and then reinstall the operating system.
Reinstalling the MacOS operating system
If your Mac won't boot and is stuck at the loading indicator, and recovery regular means does not give results, then, most likely, it will hardly be possible to do without reinstalling the operating system. At the same time, given the fact that the computer does not boot, retrieving the user’s files and documents can be very problematic.
In order to extract files from a boot volume that cannot be started, you will either need to connect the computer to another Mac in external drive mode (the method is not very simple and requires a second Mac computer, FireWire or Thunderbolth cable, as well as strict matching of Mac OS versions on both computers), or connect to a computer with external media with an installed operating system, or special software for extracting and transferring data.
Unfortunately, not every Mac user has the opportunity to carry out such manipulations and, faced with a situation where their computer stops loading correctly and freezes, and simple ways solutions to the problem do not help, they simply do not know what to do. If your MacBook Pro, MacBook Air or iMac does not boot or the operating system freezes when loading, you can always contact our service center specialists for help. will be done as quickly as possible, taking into account all your wishes about saving important data and the desired settings that our employees will make for your computer, so that it will delight you with its stable operation for a very long time.
If your macbook freezes on the apple, we can fix it quickly - in 30 minutes. Contact us!
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11 comments to the article "What to do if your Mac does not boot and freezes at the Apple logo"
Hello Alexander!
Sometimes, such problems are associated with the physical death of the hard drive on your Macbook. Unfortunately, hard disks On MacBooks they fail and not as rarely as we would like. If this is your situation, then we will need to separately remove the data that can be saved. After that buy a new one HDD, install it, and return all saved data back, after installing the system.
The cost of such a service is agreed upon with the client, after a thorough diagnosis for damage to the hard drive.
I have exactly the same problem - my Mac won't boot and freezes at the Apple logo
It hangs on the apple for a long time, then a chamomile appears, starts spinning, and so on ad infinitum.
I have important data there and I'm afraid of losing it. Can you restore both the data and the functionality of my MacBook?
Question: Hello, MacBook Air 13
I decided to clean the hard drive because it was full using CMD+R
I cleaned it and as a result, when I turn on the computer, it displays a blinking question mark. I decided to try to restore it through the disk volute, but it didn’t work
I decided to restart the operating system, but it didn’t work (after I click “continue” nothing happens)
In the end, I decided to use the boot disk - it didn’t work, it’s simply not there
And I noticed that my Machition HD disk was missing (I think that’s what it’s called)
Instead I now have 2 disks
APPLE SSD SM0128G Media
Apple disk image Media
Not one of them can be unmounted (the “connect” button does not work
What should I do? I’ve been struggling with the computer for two days! Without it I’m like without hands ((
Answer: Good afternoon! There may be several problems: the OS partition has fallen off, you will need to restore/reinstall the operating system. Either there is a problem with the HDD/SSD drive (failed/failing), or the HDD cable. First, in any case, you need to carry out a diagnosis. To understand what the problem is and identify the malfunction. Afterwards it will be possible to accurately name the problem, timing and amount of repairs. Unfortunately, without seeing the device, it is not possible to carry out diagnostics remotely. You need an engineer to look at your device, in fact, at the service center. Bring it, we'll see. Diagnostics at our service center is free. Best regards, MacPlus!
Question: Hello, tell me what can be done. I wanted to remove the PIN code from the MacBook Air, I picked it up and started rebooting the Windows system and it showed a black screen and it said there is no operating system? What to do?
Answer: Good afternoon! Maybe it's gone software devices. Reinstallation of the operating system costs 1500 rubles. You can also try to restore the software, we will be able to say more accurately after diagnostics. Device diagnostics are free.
Question: Hello! MacBook Pro Retina late 2013 2 months ago stopped turning on, can be heard when turned on sound signal, the caps onion lights up when pressed, but the screen does not work. When you connect an external screen, the image is displayed on the external screen! A month later, when I was about to submit it for diagnostics, I decided to turn on the MacBook - it turned on, the built-in screen worked!!! I worked on it all day, no problems. Then in the evening I turned it off - and it doesn’t turn on again, the image is displayed on the external display! Tell me what could be the problem?
Answer: Hello.
As an option, with a matrix. But it is necessary to conduct a free diagnosis.
It will help determine the cause of the breakdown, the type of work and its final cost.
We will be happy to help you! We work daily from 9:00 to 21:00.
The courier's departure within the Moscow Ring Road is free.
We can deliver the device to the service center ourselves.
Question: Good afternoon! I have a problem with my MacBook: when I turn it on normally, an apple appears on a gray background, White background, and freezes on a blue background. At the same time, it starts in safe mode, but it doesn’t work well, it freezes when I go to YouTube, for example. Before it stopped turning on, it sometimes froze and had to be turned off. What could be the problem? Help me please
Answer: Good afternoon! According to your description, there are many reasons, in order to accurately understand it is necessary to carry out diagnostics, diagnostics are free of charge on the day of your call. We will be happy to help
Question: Good day! You have useful and interesting articles and I would like to contact you with diagnostics, but I do not live in Moscow. I want to ask this question. I have a MacBook Pro 13 Mid 12, last year I changed the hard drive to a Seagate one that’s actually faster (7200) than the original Hitachi. It worked for me for 14 months and stopped loading. I thought he was dead and bought another Hitachi. I replaced the old native hdd with it, the Mac worked fine, downloaded Yosemite and connected via USB new disk installed the system. But having stuck it inside the poppy, it worked with glitches. But it worked fine via USB. I gave this disc to the store and bought another SiaGate. Same problem, only inside the Mac it doesn’t start at all, only USB. Is the problem with the cable? It’s just strange that the old hdd works with this cable, but the others don’t, although the drive with which this problem happened was also bought in a store and worked fine
Answer: Good afternoon! Yes, most likely the problem is in the HDD cable or sata controller, it is also possible the problem is motherboard. We can only say for sure after diagnostics; diagnostics are free.
Many of you have probably heard that Apple's operating system is famous for its reliability and the low number of errors and failures that occur during operation. However, Mac OS, unfortunately, is not perfect and one day it may simply not boot for no reason at all.
Without a doubt, this behavior of your Mac can be caused by a number of different errors, which need to be eliminated in different ways, but the author of this article in Lately increasingly faced with a situation where MacBook won't boot after operating system update(Mac OS Sierra in this particular case) and makes three loud squeaks, repeated with a certain frequency.
Unfortunately, this can happen to any of us, and contacting a service center is often not timely and, of course, not cheap. Luckily, there's an easy method worth trying before you take your Mac anywhere. Judging by the reviews on foreign forums, it helped many people save money on using the service, and such a “hint” has helped the author of this article more than once. This is what we will talk about. So, what to do if your MacBook won't turn on?
Error appearing when booting Mac
As mentioned above, a computer can behave in a similar way due to a number of different errors (at least 4, judging by the help on the Apple website).
However, in our case, the sequence of actions and the patient’s symptoms look like this:
- you installed the operating system update Mac systems OS (or the computer installed it itself if you have auto-update enabled);
- when you turned on (rebooted) your MacBook, instead of the expected operating system loading bar, you saw only a black (well, slightly gray, the side backlight of the monitor still turns on) screen;
- Looking at this “light black” screen, you heard three long sounds like “beep-beep-beep”, repeated at intervals of 5 seconds.
Having carefully studied the official Apple website, we find the symptoms and description of our error:
"Three consecutive beeps, repeated with a five-second pause: RAM has failed the data integrity check."
Okay, I see, it's a RAM error on our MacBook. But the officials somehow forgot to offer any solution. But we found it, and it turned out to be as simple as shelling pears. Of course, it’s not a fact that this method will help you 100%, but it’s worth a try, because... for many it is works.
By the way, judging by discussions on foreign forums, the following MacBook models most often produce this error and do not turn on: MacBook Air a1466, MacBook Pro a1278 and a1260. It is from the first that we are writing this article.
Solving the problem - resetting SMC parameters
So if your MacBook Air, MacBook Pro, iMac, Mac mini or Mac Pro won't turn on and beeps- This indicates a random access memory (RAM) error, which can most often be resolved by resetting the System Management Controller (SMC).
Depending on what device you have, follow one of the algorithms below.
If you have a MacBook with a non-removable battery
And most modern models are like this, then the algorithm of actions for you is as follows:
If you have a MacBook with a removable battery
Although, in my opinion, these have not been produced for a long time, but just in case, we proceed as follows:
If you have an iMac, Mac mini, or Mac Pro
That is, one of Apple’s desktop computers, then resetting the system management controller (SMC) parameters is even easier:
Using the method appropriate for your Mac, you will most likely see the usual Mac OS loading window - this means that the problem is solved.
What does resetting SMC affect?
If you are not very knowledgeable about computers or are simply encountering such a procedure for the first time, then before performing the steps described above, a completely reasonable question may arise: “Will I lose important data or settings on my MacBook as a result of resetting, because this procedure is somewhat similar to "hard reset" on some gadgets?"
We hasten to reassure you - no, you will not lose anything important. If you are really interested, then take a look at the list of functions for which the system management controller (SMC) is responsible, the parameters of which we reset:
- response to pressing the power button;
- response to opening and closing the display lid on Mac laptops;
- battery resource management;
- temperature control;
- sudden motion sensor;
- ambient light sensor;
- keyboard backlight;
- status indicator control;
- battery status indicators;
- Select an external (rather than internal) video source for select iMac displays.
Alternative option - rearrange the RAM
If the above option didn’t help and your MacBook still won’t start, then it’s worth a try alternative way. However, it is not suitable for any Mac computer, but only for those whose RAM can be replaced and not soldered on the motherboard (as is done in most modern Mac models).
If you have one of these computers, then this option may well help you, you just need to know how to get to the slot random access memory. The algorithm of actions is very simple:
That's all. Now you know what you can try first if your Mac won’t start and beeps with a nasty signal. We hope that one of the options suggested above will help you solve this problem and save a significant amount of money on contacting a service center.
None of us will doubt the reliability of the MacBook from Apple, because even the 2008 models still provide good competition to some modern laptops. Therefore, we can confidently say that the Apple Macbook works without freezing and practically does not break down, however, this does not mean that in some cases the laptop will always work like a clock. I would like to reflect the answer options for why the MacBook won’t turn on and their solutions in this article for our readers.
Firstly, a signal that the Macbook will not boot may be the appearance on the computer screen of an icon in the form of a gray folder with a question mark. But for now there should be no reason to panic, since the reliability of the technology allows you to save your data before the computer is turned off. Assuming that no system failure has occurred, then, no matter what, internal memory device, all information must be saved.
How to reset Macbook Pro and Macbook Air?
If your MacBook has a slight freeze and you want to quickly recover all data without loss, then you need to reset the EFI memory settings. To do this, turn off the computer, and then, while holding down the Command P R Option buttons, press the power key, while continuing to hold all keys until the next time the system greeting appears on the computer screen. This maneuver will help avoid system freezes and save data stored on the computer, as well as completely restore work on the Macbook. In the future, it is better to back up your computer data to cloud storage in case of an unexpected failure.
If after the operation your MacBook Air does not boot on its own again, check state of hard disk, as well as the moment of attaching the HDD and connecting the cable to the motherboard.
Saving data when your MacBook freezes is one of the main tasks, so you need to know the procedure to follow, after which your computer will be restored again along with all the data. But first we need to find out why this freeze happened? Firstly, there could be a problem with the computer, namely: memory failure, processor error, controller failure and other reasons. Secondly, a breakdown can also occur with the operating system, for example, when updating it to EI Capitan. Thirdly, the reason for the freeze may be the emergence of new connections that are not always compatible with the computer. In the latter case, you just need to disable everything additional connections devices from USB ports.
To correctly determine the cause of the failure, you need to check the battery and make sure that it is not discharged or has not stopped working, because if the battery runs out while updating the OS program on a MacBook, the entire system will probably freeze. So, it’s worth considering several ways to fix the computer freezing problem.
Method 1. Safe Boot - safe boot mode
First of all, use a security mode in which the MacBook will only load verified content when it starts. To do this, deactivate the MacBook and then turn it on while holding down the “SHIFT” button. Starting a MacBook this way takes a lot of time, however, there is no need to rush, because it is more important to boot with the least loss.
If you have to carry out a more detailed download to fully determine the cause of the failure, then you need to boot the MacBook by holding down several buttons: Command + Shift + V. This will allow you to run on a Macbook safe mode and view the details of launching Verbose Mode, including the causes of problems.
What does verbose mode mean? Loading Verbose Mode is a method of loading an operating system in which specific information appears on the display about the downloaded files of drivers and programs and displays in detail all the processes occurring in the system during the boot process of the MacBook.
If after the above-described download your computer can be fully restored, then perform a standard reboot of the operating system. If this method did not help you solve the Macbook freezing problem, then in the future we recommend that you turn to the next method to solve the problem.
Method 2: Download via Disk Utility
It is clear that the MacBook may not turn on and may freeze. various reasons. If we assume that this is not a hardware problem, but that the hard drive is to blame, then it will not be difficult to check the cause if you run Disk Utility or Disk Utility on your MAC.
First you need to turn off your computer. If your MacBook displays a blue, gray or other color screen with a spinning boot button, then, unfortunately, you will have to forcefully turn off your MAC by holding down the computer start button for 5-8 seconds.
Next, to activate Disk Utility, you need to open the recovery mode in your operating system. You can do this in the following way. Hold two buttons simultaneously Command and R and press the power key. Upon successful login, a screen named MAC OS X Utilities will open in front of you. Now look for the Disk Utility icon on the open screen to activate it. Next, click the name of your MAC's hard drive, which is located on the screen to the left of Disk Utility. Next, start the verification by activating the Verify Disk line and wait until it finishes. Finally, activate the verification process by clicking on the Repair Disk line. Next, all that remains is to start your computer again.
Method 3: Launch an external drive
Sometimes it’s better to play it safe, so you end up in a situation where there is not a single backup copy of your data, and your computer is inappropriately frozen. Even if you have saved repeatedly backups data, but how to get to it now? This problem was easily solved by your Apple Macbook, since you can use a special external disk mode - Target Disk Mode.
The sequence of actions to start an external drive consists of the following order. It won't take long to get started additional computer MAS. Once the second computer is found, connect them using a certified Thunderbolt cable. The next step is to turn off your MacBook, and if necessary, press and hold Power button for a few seconds until the laptop can boot. After your computer starts to boot, immediately press the “T” key and hold it down until the Thunderbolt entry appears as an icon on your frozen color screen.
This starts external disk mode. Essentially, the laptop plays the role of an external drive, and not the usual computer. If everything went well, you should soon see the Finder display. external device — new hard disk. Using this unusual convenience, you can copy and save all your necessary data before the computer is restored.
After everything is saved to the external hard drive, you will have to move it to the Finder, just like you would with a real drive. Then disconnect the Thunderbolt cable and start the laptop by holding the Power button again.
Method 4: Restart the operating system
When none of the methods worked positive results, and your MAC is still “hanging”, remains last method— reinstall OS X. To do everything according to the rules, you need to turn on the laptop in recovery mode and exactly repeat all the steps specified in option 2. In particular, we launch the MacBook with the R+Command buttons held down.
After the operating system starts, find the Reinstall OS X line and, following the instructions that appear on the display, follow all the steps to restart the operating system.
If, after all the work done, your MAC does not start again, then, alas, perhaps the problem lies in the hardware and you need to contact a service center, since some parts have failed or the cable is broken. However, such a failure could also occur due to replacing old and connecting new equipment that is not compatible with your OS X. For example, if you install someone else’s memory module on your MAC. Therefore, carry out repairs of your devices only in certified service centers and don't be fooled by the cheapness.
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