IMAC Safe Mode. Instructions for downloading the Mac OS system in special modes, such as safe or external disk mode

Not only users operating system Microsoft has to deal with the problems of launching a computer or laptop. Apple devices, despite their full-fledged hardware orientation, are also not insured against such cases. It may be technical problems of the components of the device, connected external equipment or incorrect work BY.

It is the error in the work of software and are the most frequent cause Loading failures. And using the recovery tools developed by Apple engineers, users can try to solve these problems.

To begin with, it makes sense to restart the dependent device in the "clean" mode by turning off the entire periphery. In some models, this is done long by pressing the power button, and in some - the pinning of the touch id sensor in the same way. If we are talking about a different failure, this procedure will return the device to the working state. But if the reason is more serious, you may need to start Mac OS in safe mode. It is largely similar to the similar mode of the operating system from Microsoft.

Safe Mac OS Mode

Represents the launch of the operating system with minimal functionality (including acceleration of graphics), assuming all external services, autorun list, system cache cleaning, and diagnostics and correction possible errors In directories. In modern mAC version OS Sierra Safe mode is activated in two secure boot options - Safe Boot (normal) and Verbose. They differ only on the leading in the Verbose magazine of the phased loading of all components of the system (process manager of processes, programs and drivers) to monitor their status from the user.

Starting a safe mode

To download Mac OS in safe mode, you must turn off the device, and then press the power button by clicking SHIFT. Mac with download logging mode is started by adding the V and COMMAND buttons to this combination. You should release the keys immediately after the Apple logo appears on the device display.

The process of loading the mode is not fast, so patience should be drawn: sometimes users, taking long download Behind the failure, forcibly disable the device, which complicates the recovery process. If Mac OS is managed to download, you can restart the device to normal mode. With a high probability, the computer will boot normally, allowing you to work further.

Secure Restrictions

It is important to remember that the safe mode is not designed to work on the device. His task is localization and correction of program errors. Therefore, most of the computer functional will remain for the user inaccessible, and some of the functions may not work correctly.

Among them:

• No DVD Playback and Some Video Content.
• The impossibility of full-fledged work in graphic editors and video edits.
• Possible inoperability Wi-Fi.
• Inaccessibility of many peripheral devices When trying to connect them. This concerns both mice and keyboards and other USB devices. In addition, the correct operation of the ports of 1394 and Thunderbolt is not guaranteed.
• Possible interruptions in the work of the speakers and the microphone.
• Absence general access to files.
• Interruptions in the work of the gesture management system.
• Disabled acceleration graphics.

Fixing trouble

Since one of the components of the Safe Mac OS mode is to restore cache and directories, then when you repeatedly appear problems with the download associated errors, you can exclude and pay attention to autorun. A complete check of objects in it should be implemented in phasing out of each item from the list and subsequent reboot of the computer.

The sequence of action is:

1. Go to "Users and Groups" section, which is in "System Settings".
2. Open the Input Objects block, located in the Account section (clicking on the account name).
3. Delete all records from the list by preserving this information in one way or another.
4. Reload the device B. as usual mode.
5. If a restart to normal mode has been successful, you should again run Mac OS in safe mode and one to add to the list each of the previously deleted items. Operations must be done until the device stops loading, thereby localizing the source of the problems.

What is a safe mode?

Safe mode (Sometimes called "Download in Safe Mode") - this is a way to launch a Mac computer, in which certain checks are performed, and automatic loading and opening are prevented. defined programs. When you start a Mac computer in safe mode, the following occurs.

• Checked boot disk And if necessary, attempts are performed to eliminate directory errors.
• Only the necessary kernel extensions are loaded.
• Prevents automatic opening of start and input objects.
• Custom fonts are disconnected.
• Cache fonts, kernel cache and other system cache files are removed.
• If the MAC computer does not occur when running in safe mode, it may be possible to identify the cause of the problem.

Starting a computer in safe mode

To start the computer in safe mode, follow these steps.

1. Run or restart the Mac supporter, the after-step press and hold sHIFT key. The display will appear apple logo. If this does not happen, see.
2. PREPARATION OUTPUSTEKLAVYVISHIFT. If the boot disk is encrypted using FileVault, you may have to enter the credentials twice: to unlock the boot disk and to enter the Finder.

To exit the secure mode, restart the computer without pressing any keys during startup.

The problem does not occur in safe mode.

If after launching Mac in safe mode the problem is not observed, restart the computer without pressing any keys.
If the problem appeared again, it may indicate the presence of incompatible input objects.
If the problem has not appeared, it may have arisen due to an error in the cache file or directory that has been eliminated when started in safe mode.

Restarting or turning off the Mac computer in safe mode

When starting in safe mode, the Mac computer automatically checks the boot disk directory. This process is similar to that when using a disk utility for checking or recovering discs. Restart after recovery directory will be automatically executed.
If the MAC computer is turned off, check it out to connect it to the power supply and serviceability. electrical outlet. When using the MAGSAFE power adapter, make sure that the power adapter light is lit in yellow or green. Then again try to start the computer in safe mode.

How to determine whether the computer is run in safe mode

If you doubt that the MAC computer is running in safe mode, you can check this using the System Information program. After starting in safe mode in the "By" section of the System Information window, the "Safe" will be indicated for the download mode, and not "normal".

In addition, if the MAC computer is running in safe mode, "Download in Safe Mode" will appear in the upper right corner of the screen.

Inaccessibility of some functions in safe mode

• Some MAC computer functions are not available at startup in safe mode:
• Unable to play a movie in a DVD player.
• Unable to recording video in iMovie and some other programs to work with video.
• Some audio input and output devices may not work.
• Some uSB devicesFirewire and Thunderbolt may not be available.
• Depending on the Mac model and version of MacOS, access to wireless network Wi-Fi can be limited or absent.
• Universal access functions, such as VoiceOver, may not work properly.
• Sharing files are disabled.
• In safe mode in OS X Leopard, 10.5 or later, the graphics acceleration is also turned off.

For this reason, the menu string looks opaque, even if in the program " System settings»The" Transparent Menu "or" Reduction of Transparency "checkbox. In addition, the screen can "flash" or "break" during the entry when the MAC computer is running in safe mode.

If the MAC computer has no keyboard to start in safe mode or if you cannot use the SHIFT key

If a keyboard is not connected to the Mac computer, in connection with which it is not possible to press the key to start a computer in safe mode, but it is remote access to the computer, the start in secure mode can be performed using the command line.

1. Projetetekcomandrock, remotely optical program "Terminal" or by following an input with SSH.
2. In the Terminal program window, enter the following command:

sudo Nvram Boot-Args \u003d "- X"

If you want to run in the detailed logging mode, use the command:

sudo Nvram Boot-Args \u003d "- X -V"

3. In order that the consecutive value of the onset of the usual startup mode, enter this command in the program "Terminal" window:

sudo NVRAM Boot-Args \u003d ""

The note is created "for memory" on a specific occasion
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If Mac hung during operation and does not respond to requests, should help forced reboot. To execute it and hold the power button while the Mac screen does not go out, and then turn on the computer as usual.

Attention! With such a shutdown, the unsaved data in the applications are most likely lost.

2. Extraction of removable media

EJECT (⏏) or F12

During the MAC failure with optical drive and disk inside the system may unsuccessfully try to boot from it and hang. To remove the media, press the ⏏ (EJECT) button or F12 on the keyboard, or press and hold the mouse or trackpad button.

3. Selecting the boot disk

If multiple disks are installed in Mac and you cannot download the system from the disk by default, you can call the loading disk selection dialog and select the desired media manually. To do this, press and hold the ⌥ (Option) key immediately after turning on the computer.

4. Loading with CD or DVD

Similarly, you can give the MAC command to download from the disk from the built-in or external optical drive. In this case, press and hold the C key on the keyboard.

5. Download from server

⌥N (Option + N)

When in the local there is a NetBoot server on which boot image Systems, you can try to run Mac using it. To do this, press and hold the ⌥n key combination (Option + N).

On computers with the Apple T2 processor, this boot method does not work.

6. Run in external disk mode

If Mac does not want to run, you can translate its mode external disk And copy important files by connecting to the FireWire, Thunderbolt or USB-C in another computer. To start in this mode, press and hold when the T T.

7. Starting in detailed logging mode

⌘V (Command + V)

By default, MacOS does not display a detailed start-up protocol, showing only the download band. If you have any problems, you can enable a detailed protocol, which will help to understand at what stage of download an error occurs. To do this, when turned on, press the combination ⌘v (Command + V).

8. Start in safe mode

When Mac is not loaded in normal mode, you should try to start secure mode. It is checked with a disc check and only the basic components of the system are turned on, which allows you to determine which name of the program or service cause errors. To download in secure mode, press and hold the ⇧ (SHIFT) key.

9. Single-user regime

⌘S (Command + S)

This mode launches the system in an even more trimmed version - it is only available in it. command line. Nevertheless, with its help, experts will be able to diagnose and correct errors in their presence. To start in single user mode, press the Key-key combination (Command + S).

10. Running diagnostics

macOS has built-in software diagnostics, which will help identify hardware problems. To start the diagnostics, press and hold the D key.

11. Running network diagnostics

⌥d (Option + D)

If the boot disk is damaged, then start the diagnostic test will not be released. In such cases, network diagnostics will help to start the test via the Internet. To do this, press the combination ⌥D (Option + D)

12. Recovery mode

⌘R (Command + R)

When loading in recovery mode, you can access the disk utility, reinstall MacOS, as well as restore data from the created backup. To get into the recovery mode, press and hold the combination ⌘r (Command + R).

If the firmware password is installed on Mac, you will need to enter it.

13. Network recovery mode

⌥⌘R (Option + Command + R)

Similar previous modewhich in the presence of the Internet allows you to reinstall MacOS by downloading the distribution system directly with apple servers. To use it, press ⌥⌘R (Option + Command + R).

14. Reset NVRAM or PRAM memory

⌥⌘pr (Option + Command + P + R)

If there are problems with display, speakers, cooling fans and other Mac components, you can try to solve them using NVRAM or PRAM memory. To do this, when started, press and hold the ⌥⌘PR keys (option + Command + P + R).

If the firmware password is installed on Mac, this method will not work.

15. Reset SMC.

A more radical reset method - return to the standard system control control parameters (SMC). It is applied if the previous method did not help. Depending on the Mac model reset SMC. Performed in different ways.

On the stationary computers You need to turn off the Mac, disconnect the power cord and wait 15 seconds. After that, connect the cable again, wait five seconds and press the power button to turn on.

On Notebooks S. removable battery You must turn off the Mac, remove the battery, and then press and hold the power button for five seconds. After that, you need to install the battery and click the button to turn on.

On laptops with a non-removable battery You need to turn off Mac and simultaneously press and hold and hold the SHIFT + Command + Option button for ten seconds. After that, you should release all the keys and press the power button to turn on.

On the MacBook Pro. With Touch ID Sensor Button is also a power button.

After upgrade to OS X Yosemite, sometimes there is a problem, in which the poppy is constantly loaded in safe mode. In this mode, only the services required for the system are downloaded and several utilities for checking the system are downloaded. Usually, to boot in safe mode, when the computer is turned on, you need to press the ⇧Shift key, but sometimes the system is loaded in safe mode yourself.

If you have this problem, it is worth paying attention to several points.

Is the system loaded in safe mode?

Distinctive features of the safe regime in early versions OS X was a string of progress on the boot screen. In OS X Yosemite, it remained unchanged, and in addition to the rainbow circle, instead of the cursor, a miniature string of progress is replaced during loading. Also on the login screen account You will see the red "Safe Mode" inscription in the upper right corner of the screen.

Reset Pram

Pressing the ⇧shift key when the computer is turned on, you give the OSX boot command. Your poppy can save these commands on a special drive, which is called PRAM (Parameter RAM) and in the current key ⇧shift will not be clamped. If this happened, you can try to solve the problem, dropping PRAM. To do this, restart the computer and when you hear the computer loading signal. Hold the keyboard key ⌥alt / option + ⌘Command + P + R. Wait until the system restarts and release the keys after the boot repeated signal.

Correct or format hDD.

One more possible reason Permanent computer loading in secure mode can be in error formatting your boot disk.

Run the computer in recovery mode (climbing the ⌘Command + R keys when you turn on the computer) and select Disk utility. In the window that opens, clicking the ⌘Command key, click on the boot and the disk on which it is located, then click the Check Disc button in the First Aid tab. So you start checking the volume markup and disk formatting. If errors are detected, click the Fix Disc button. Restart the computer to check whether the problem is eliminated.

If your poppy is still loaded in safe mode, it is necessary to format the hard drive and restore data from the Time Machine backup. To do this, first make sure you have a full backup of the system (if not, then you must do it), then download the computer again in recovery mode. Run the disk utility, select your hard disk in the left column and open the Disc Section tab. In the drop-down menu, select "1 section", then click the "Parameters" button at the bottom of the window and make sure that the GUID section is selected by the section. Give the name section and select Mac OS X Extended format (Journal). Click "Apply".

When the process is completed, close the disk utility and select "Restore the Time Machine backup system"

Can not format the hard disk?

In some cases, damage hard disk Do not give the disk utility to format. There are messages that the section cannot be disabled or drive is busy. In these cases, you must boot from another disk, format the problem disk and restore the system.

To do this, you need to install OS X to free external USB drive And launch the system from it. Thus, you can use the disk utility and format the problem disk as described above. After that, you can run your poppy in recovery mode by closing the key combination ⌥LT / Option + ⌘Command + R when the computer is started, and select Restore your poppy from the Time Machine backup.

The result is a corrected hard disk with the restored OS X and all user data, and the system should be run as usual.

Activated when loading the Shift key. The next load is automatically occurring in normal mode. But sometimes it can be stuck in a safe mode that limits the capabilities of the computer. Safe mode is designed to solve system problems, And constantly use it is simply uncomfortable. That is why the problem needs to be solved.

In this article we will tell you what to do if your Mac is constantly loaded in safe mode. This can happen for various reasons, and we will look at everything.

1: Check out key Shift.and keyboard

The reason may be in the shaft key SHIFT. That is why the first thing you need to check and clean the keyboard and especially the SHIFT key. You can use compressed air in case the garbage fell under the keys.

Shipping keys is especially relevant for MacBook Pro 2016-2018 and Macbook 2015-2017 lines, which is very easy to score the keyboard. Apple recommends keeping a laptop at different angles during cleaning compressed air. Most likely, the problem is not in this, but check the keyboard does not interfere.

If you briefly: check the SHIFT key and clean the keyboard. This can be done by a special device or a conventional napkin and air.

2: Reset NVRAMon the MAC.

The next solution may be a reset of NVRAM / PRAM on Mac. It is done during MAC download and should help solve the problem.

• Restart Mac and immediately clamp the keys Command. + Option + P. + R. At the same time.
• Continue to keep the COMMAND + OPTION + P + R keys, while you don't hear the download sound and do not see Apple logo on the screen. It usually takes about 20 seconds.

After that, Mac should boot as usual. This process It can solve many other problems, including this.

Other options

In most cases, the two previous ways solve the problem, but if they did not help you, you can try the following solutions:

• Reset SMC on Mac.
• Disable external keyboard And use the other.
• Make sure the Mac or its keyboard is not damaged by the liquid.
• Make sure that there are no other damage on the Mac or its keyboard.
• Reinstall