Maintain and Repair Mac OS X 10.7, OS X 10.8, OS X 10.9, OS X 10.10 (Lion, Mountain Lion, Mavericks and Yosemite) - Tips

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Last updated on by * * _Francis_

Basic maintenance

Regular cleaning routines, called "Daily, Weekly, Monthly" are programmed by default in automatic mode at certain times.

If these maintenance routines could not be done at the scheduled times (Mac in sleep or shutdown), they will be done automatically when the Mac is awakened.

It is therefore no longer necessary, as in the past, to worry about these tasks.

For more information, see these Apple pages:

We can also be content to do a cleaning from time to time, every two weeks, or every month, for example, with a utility that will do other cleaning operations in addition, such as repairing the permissions of the disk, emptying the caches, purge logs, etc ...

With Onyx for example, which is here:

Be careful to take the correct version.

Once the disk image is in the "Downloads" folder, you mount it by double-clicking,

then we put the application in the “Applications” folder.

After that, the disk image can be ejected and discarded.

To use Onyx next, the procedure:

  • Quit all running applications
  • Start Onyx
  • Let it check the SMART status of the hard drive (SMART is a diagnostic of the mechanical condition)
  • Let Onyx check the structure of the volume (this warns if the system needs to be repaired in addition to cleaning)
  • Then give the Administrator password when he asks for it
  • Read or close the Important Information Note. (in the Onyx / Preferences / "Messages and history" menu, you can disable the opening of this window when launching Onyx)
  • Click on the "Automation" button
  • Check all the boxes except "Display of folder contents" to not modify the presentation preferences of folder windows
  • You may also be able to not check the box linked to the reconstruction of the Spotlight index.
  • Click on "Run"
    • Restart the Mac
    • After the 1st restart, during the first moments of use, the Mac may seem less responsive, this is normal.
    • If the rebuilding of the search index by Spotlight has been started, this search will not be immediately operational on restart. We will have to wait until this index is completely rebuilt. It may take an hour or more depending on the content of the disc.

You can also use Maintenance, from the same editor as Onyx

There are other utilities, quite simple and convenient for cleaning on Mac, and which are sufficient in their free versions,

For example:

iBoostUp :

Important note : Never install MacKeeper

Important note : Never install MacKeeper

Re-initialization of the management unit

Sometimes the Mac behaves in an abnormal way without us being able to know the exact reason, for example: the USB sockets no longer communicate, the keyboard does not work correctly or other anomalies. In these cases, a reset of the management unit can resolve the problem, for this see the simple procedure which is suitable for the Mac model, on this page:

The different stages of repairing the boot disk

CAUTION: For portable Macs, all these operations must be carried out when the Mac is powered by the mains. Do not engage in this kind of operation when the mac is running on a more or less charged battery.

Note: Since Mac OS X 10.7 installing OS X, automatically creates a hidden rescue partition intended to allow repairs or reinstallation without resorting to an external volume. But you should know that this emergency partition will not be created in the case of an installation of OS X 10.7 or more, on an already partitioned volume. (except a possible Boot Camp partition, which will not prevent the creation of this emergency partition).

Start extensions disabled

Note that if you start with the cmd and V keys held down, the Mac will start in Verbose mode, that is to say by showing the different startup steps on the screen, sometimes it can help to locate a problem. (NB: the cmd key is also called the Apple key. It is the key placed directly next to the space bar)

NOTES: Proceed after disconnecting any third-party devices. Leave only the Apple keyboard and mouse connected. In some difficult cases, it may even be necessary to remove third-party cards installed in the Mac.

Starting and repairing from the spare partition

Starting in "Single User mode" and fsck -fy procedure

The Mac will restart normally

For more information, see this Apple page:

In case of failure of repairs

If the problems persist or the hard drive cannot be repaired, you will need to:

An 10.8 USB Stick can be created using this procedure:

An 10.9 USB key can be realized according to one of the procedures indicated here:

An 10.10 USB key can be realized according to this procedure:

  • Either use software that can rebuild the directory of the hard disk. The most effective in this situation seems to me to be DiskWarrior ; it is relatively expensive but generally efficient commercial software.



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