Mac os x disk utility. Network diagnostic mode
The most common tool for working with disks in Mac OS X, regardless of their number and connection method, is Disk Utility. With her help without unnecessary problems you can perform almost any necessary operation both with the entire disk and with the logical volumes that are created on it. But it also has one drawback, which may be especially noticeable for those who actively use a large number of drives connected to one Mac computer. The disadvantage is that Disk Utility works only with one disk or logical volume at a time and cannot perform multiple operations in parallel.
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In we already touched on the topic of Apple RAID and mentioned that regular means Mac OS X (such as Disk Utility) encryption of RAID arrays is not supported, however, if you particularly wish, this limitation can be bypassed. For example, you can create an encrypted disk image file and save it to logical volume, corresponding to the created RAID array. Unfortunately, this option also has its drawbacks. The price for increasing the level of security will be speed of operation and ease of use. The process of interacting with the resulting image will be quite cumbersome, since you will need to mount it every time, and the speed of reading and writing data will be much lower than usual. Thankfully it's not the only way encryption of data in the RIAD array, accessible to the user.
Thanks to the benefits of logging file system In Mac OS X, the likelihood of data corruption and loss is quite small, but there are still cases when the disk cannot be accessed. Usually possibilities Disk Utility It’s quite enough to detect and correct disk errors, or, as a last resort, format it, but sometimes even this is not enough.
When problems like these occur, your drive may show up as Finder, but its contents will not be available, or it may only be present in the window Disk Utility, and when you try to connect it or interact with it in any other way, various error messages appear, for example, “the resource is busy” or “the disk could not be disconnected.”
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In progress Mac updates OS X searches for and removes programs and services that may interfere with correct operation system, but sometimes it happens that some incompatible programs may be skipped during the scan, which may cause crashes. And although usually similar problems can be easily eliminated using standard means, failures can also occur during the system boot stage, which will make working with it impossible. In this case, you can try to reinstall the system from recovery mode or restore from a backup (which we strongly recommend doing before each update), and then update again, however, there is a possibility that these actions will lead to the same result. The reason may be incorrect kernel extensions or file system errors, but fortunately in both cases it is possible to restore the system.
We already had one tale, now we’ll tell a fairy tale - this time, how not to waste time trying to bring a failed poppy to life.
So, let’s imagine for a second something terrible (pah-pah-pah!) - you turn on the Mac, and it... it let you down and doesn’t turn on, doesn’t start, doesn’t boot. In general, any “no” that means does not work. I’ll try to give a template of actions that should be taken to get your equipment working again as quickly as possible and what can be done in cramped conditions, such as a trip to Altai or other distant lands.
The first “no” - does not turn on or does not start.
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During the process of updating OS X to version 10.10.3, the computer must reboot and for some users, instead of the usual system boot, only gray screen, and the system itself freezes. This is most likely due to changes in the FileVault encryption process.
With the 10.10.3 update, Apple released a recovery update that makes changes to the hidden recovery partition on your drive. This partition is used to unlock the boot disk when the computer starts and, apparently, as a result of the update, the process of unlocking the boot disk does not work correctly for some users.
This issue does not affect user data stored on the drive, so instead of formatting the drive and restoring the system from a backup (which is advisable to do before each update), you can try to resolve the issue by disabling FileVault.
Our clients, as well as us, often need to exchange electronic correspondence with each other. Moreover, very often we add attachments to emails: screenshots, voice recordings, small programs. In order to attach several documents to an email at once, most of us are accustomed to using archives. To make this task easier, Apple has added context menu Finder's ability to quickly and easily create a zip archive is the “compress” option. We and our clients use it all the time. But what to do when email correspondence is not encrypted, but we need to exchange confidential data? That's right, protect your files with a password. But the developers from Cupertino no longer provided such an obvious option to us, haunted by the mania of persecution of those concerned about data security. Below we will try to find a few interesting solutions for our task.
When you first bought your first Mac, things were completely different. It was fast, nimble, turned on instantly, launched programs at lightning speed and generally the trees were taller, the grass was greener, the sky was bluer. But over time, everything changes and the “rainbow wheel” spins constantly, unnerving you and preventing you from working comfortably. Many developers are speculating on this basis. software, including the creators of the notorious MacKeeper, but it’s not at all necessary to open your wallets and run to part with your money to buy another unnecessary program. And it is not necessary to immediately format the hard drive and clean slate reinstall the operating system (although this option is quite effective and we will also discuss it). We will try to understand the reasons for this behavior of Mac and offer tips for eliminating it.
There are three possible reasons"braking":
The permissions repair feature has long been standard in OS X. Despite its ambiguity, Apple lets you run Disk Utility if necessary and check and repair permissions caused by software glitches. A new version operating system OS X El Capitan brings changes to this well-established process.
“I was shocked to learn how much Disk Utility had changed. I can't believe there is no way to check and repair the permissions or the drive. This is no longer a utility,” SelectGroup says indignantly.
IN in this case we're talking about about disk utility number 15, included with OS X El Capitan. Previously, it performed many important functions. For example, scanning system disk for damaged objects. Another important function was the management hard drives: formatting, partitioning, error correction. This functionality is no longer available. Mac owners"from the box".
But most OS X users probably won't notice the changes. According to statistical data, only a small part of Mac users used the function of restoring access rights.
If you are one of those who preferred to correct errors manually, we hasten to rejoice. OS X El Capitan has a built-in automatic file system scanning feature. It regularly checks the drive and eliminates any software glitches. By at least in theory.
This is what Disk Utility looked like in OS X Yosemite:
And this is what she looks like now:
A much more visual and therefore convenient demonstration of the distribution of data on the disk. In reality, Disk Utility represented of dubious value for working with files. According to Apple, it was almost a panacea for all problems. But in reality, it turned out that most of the damaged data remained unfound. Any specialized software from App Store offers much wider possibilities.
OS X El Capitan September 30. All are compatible with the operating system Mac computers, released in 2009 or later, and some models released in 2007 and 2008.
The permissions repair feature has long been standard in OS X. Despite its ambiguity, Apple lets you run Disk Utility when needed and check and repair permissions caused by software glitches. The new version of the OS X El Capitan operating system has brought changes to this streamlined process.
“I was shocked to learn how much Disk Utility had changed. I can't believe there is no way to check and repair the permissions or the drive. This is no longer a utility,” SelectGroup says indignantly.
In this case, we are talking about disk utility number 15, which is part of OS X El Capitan. Previously, it performed many important functions. For example, scanning the system disk for damaged objects. Another important function was hard drive management: formatting, partitioning, error correction. From now on, this functionality is not available to Mac owners out of the box.
But most OS X users probably won't notice the changes. According to statistical data, only a small part of Mac users used the function of restoring access rights.
If you are one of those who preferred to correct errors manually, we hasten to rejoice. OS X El Capitan has a built-in automatic file system scanning feature. It regularly checks the drive and eliminates any software glitches. At least in theory.
This is what Disk Utility looked like in OS X Yosemite:
And this is what she looks like now:
A much more visual and therefore convenient demonstration of the distribution of data on the disk. In reality, Disk Utility was of dubious value for working with files. According to Apple, it was almost a panacea for all problems. But in reality, it turned out that most of the damaged data remained unfound. Any specialized software from the App Store offers much broader capabilities.
OS X El Capitan September 30. All Mac computers released in 2009 or later and some models released in 2007 and 2008 are compatible with the operating system.
As you know, computers Macs are reliable and are almost always easy to maintain. However, this doesn't mean you shouldn't completely ignore system maintenance. In this article I would like to share several simple tips, which will help the average Mac owner keep his Mac looking its best.
1. Launch Disk Utility
Running Disk Utility once every couple of months is a good idea for two reasons: restoring access rights and, more importantly, checking and hard restoration disk. Disk Utility is available on every Mac - the utility is located in the /Applications/Utilities folder. Both procedures that I mentioned above are located in the “First Aid” tab. Let's look at each of them in a little more detail.
a) Restoring access rights
Restoring access rights is a good practice, but it is not a cure-all, as some professionals like to claim. However, every Mac driver should run this process from time to time, especially after installing or uninstalling large number applications.
b) Disk recovery
In my opinion, this is the most an important part from the Disk Utility functionality. Although you can check at any time boot volume, best to restore boot disk from the recovery partition ( recovery partition) using the hotkey combination Command+R and launching Disk Utility from there. You will need this if HDD damaged or contains partially damaged areas. Don't forget to run Verify Disk not only on the disk itself (physical disk name), but also on boot partition(in my case it is called Mas). If any errors are found, they will be highlighted in red. Fortunately, Disk Utility can almost always resolve them.
2. Keep your Mac software updated
Keeping the software on your Mac up to date is truly vital. Periodically run Software Update from the Apple menu, and also check for updates to individual applications from Mac App Store. The update may contain fixes common mistakes, improving security and expanding functionality. There's no reason why you shouldn't check for new versions of your installed programs from time to time.
By default, Software Update checks for updates once a week, but the Mac App Store in OS X Lion requires the user to manually check for updates. As you know, in new system OS X Mountain Lion The Software Update function has completely moved to the Mac App Store, so now this process will be fully automated.
3. Keep your desk clean
Believe it or not, a large number of files on your desktop can also slow down your Mac. The slowdown is not as noticeable on newer Mac models, but it still occurs because each file and its icon preview takes up RAM. And the less free random access memory, the more the computer slows down. The best decision In this situation, create the habit of regularly cleaning your desktop and moving files to the appropriate folders. If this is too nerdy for you, you can simply move all desktop items to separate folder to deal with them later.
If you cannot bring yourself to do this yourself, then you can use the appropriate applications for automatic cleaning desktop and moving files to specific folder at regular intervals.
4. Back up your personal data regularly
Performing regular backups is necessary for Maintenance Mass. This is a good practice because you will be able to quickly restore everything back in case of any problems. The simplest solution for Reserve copy data on Mac - built-in application Time Machine. You will need external hard disk, but once Time Machine is set up, the rest of the automatic backup process will be very simple and effortless.
If you haven't set up Time Machine yet, you really should. Order some big, cheap external hard drive, and then set up Time Machine from System Preferences. You will be truly happy when you need to recover old files and data.
It's also best to follow the habit of doing manual backups before installing system updates. Occasionally, there are still cases when something can go wrong.
The best option is to do prevention rather than treat diseases later. If you know any useful tips on Mac maintenance, you can leave your opinion in the comments.
operating system OS X Mountain Lion very self-sufficient, and to solve the majority necessary tasks You can use system utilities.
After purchasing a new computer, hard drive or installing and reinstalling the operating system, most users may think about the need to split the drive into several partitions.
Why is this needed and how can this be done using standard means OS X Mountain Lion, read this guide.
Using Disk Utility in OS X Mountain Lion, you can perform the following tasks:
-copy disks;
- burn disk images;
- create images of new disks;
- format partitions and drives themselves;
- treat partitions in partitions with the HFS+ file system;
- resize existing sections V hard drives without formatting them, and much more.
When you first launch Disk Utility, you will see a standard main window with an extremely intuitive interface.
In the left column you need to select the hard drive or image that you want to work with this moment, after which you can begin to complete the task.
Deciding on the file system of the drive
Mac OS Extended is a standard file system for the OS X operating system. It is worth using such a file system on an external drive if you are going to use it exclusively in the OS X system, since on Windows recording it will be impossible. For use with Mac OS Extended Windows users will have to install special applications or driver. However, their use may eventually destroy the file system, after which formatting (deleting all files) from the drive will be required.
The main advantage of Mac OS Extended is its support key functions OS X, including Versions, as well as many others.
MS-DOS (FAT) - this file system is ideal for small flash drives, since it does not allow recording files larger than 4 GB. Remember this when formatting in MS-DOS (FAT).
Thanks to MS-DOS (FAT), you can use the drive in Windows, OS X, and even with such game consoles, like PlayStation 3, Xbox 360, and also Wii.
ExFAT - this file system is an updated FAT and allows you to work with files larger than 4 GB. The only downside to using it is the lack of support system functions OS X
Once you have decided on the choice of file system, you can safely proceed to formatting or partitioning the drives. I would like to give advice - on external hard disks, use Mac OS Extended, as it is the most stable and ideal for working with OS X.
Creating partitions on a hard drive or external drive
First, let's figure out why you might need this. So, hard marking disk is extremely necessary when using external hard large capacity disk. Let's say, when buying hard disk with a capacity of 2 TB, it is possible to create two logical partitions, one of which can be used to create backup copies in Time Machine, while the second one can store a media library for iTunes.
Please note that the backup partition size is help Time Machine must be no less than that of systemic hard drive on which OS X Mountain Lion is installed. On average, if you do not back up your media library and other unnecessary multimedia files in Time Machine, for backup it is enough to use a logical drive partition with a capacity of 200-300 GB.
In order to divide the drive into several partitions, you need to select its main partition, as shown in the screenshot, and then go to the tab "Disk partition" .
At this point I have two partitions, since I previously divided the hard drive. You need to select the main section, you will only have one, and then click on the button «+» , which is marked in the screenshot.
After clicking, the drive will be automatically divided into two equal-sized partitions.
Attention! Do not exit the application and do not click “apply”!
After automatic layout, you need to set the correct size for each section.
To do this, click on the required section and type into the window "Size" the right volume for it. You can also adjust the section using the special slider marked in the screenshot.
After you have completed all these steps, you can safely click "Apply" and Disk Utility will begin partitioning the selected drive. In a similar way, you can create partitions in drives that contain some information.
When creating new partitions, do not forget to specify their correct size, and never disconnect the drive or turn off the Mac - this can lead to irretrievable loss data.
Checking and repairing the disk and access rights
Once every few months, especially if you are actively using your computer with OS X Mountain Lion and installing many applications, you should check your permissions as well as the hard drive itself.
To do this, you need to close all applications, open Disk Utility and select the system disk or partition, then open the tab "First aid" .
In this tab, click "Check access rights" and wait for the process to complete. If the window says that it is recommended to restore access rights, then click the button "Restore access rights" .
After this, check the disk by clicking on the appropriate button. If necessary and only if necessary, press the button "Fix Disk" .
What is it for? Some of the applications may change access rights to various system files, which leads to incorrect access to them. Restoring access rights allows you to avoid various operating system freezes, as well as some other problems.
Life-Hack - create a backup of the system disk using Disk Utility
Many people consider Time Machine to be the main backup method, but this is not at all surprising.
Time Machine lets you save copies of multiple versions identical files, has amazing functionality, great design and incredible user-friendly interface. Unfortunately, backup using Time Machine has one undeniable disadvantage - over time, the storage space begins to run out catastrophically.
That is why it makes sense to create a full backup using OS X Disk Utility.
To do this, you need to select the system partition or the entire hard drive if you have only one partition on it, then go to the tab "Restore" .
Now just drag the icon system partition in the column "Source" , and in the graph "Destination" please indicate external storage in a similar way. remember, that backup copy will be completely identical in volume to the system partition.
Now, if your hard drive fails, you can always easily restore OS X on any other computer.
To avoid rapid wear and tear on your hard drive or SSD, try to adhere to the conditions under which it is used and stored. Don't forget that standard hard disks incredible sensitive to falls and shocks.