System restore mac os x without disc

Installing a fresh copy of macOS via Recovery Mode
Contents:
  1. If you never upgraded to macOS Sierra 10.12.4 or later
  2. How-To Factory Reset MacBook Air and other macs with macOS
  3. Before we begin
  4. MacOSX Lion - Reinstall Your OS Without Installation Disc

If you never upgraded to macOS Sierra 10.12.4 or later

Finally, you might have to reregister or reinstall some of your software. That said, reinstalling OS X almost always corrects all but the most horrifying and malignant of problems.

The process in El Capitan is compared with root-canal work, income taxes, or previous versions of OS X relatively painless. In theory, you should have to install El Capitan only once, or never if your Mac came with El Capitan preinstalled. And in a perfect world, that would be the case.

But you might find occasion to install, reinstall, or use it to upgrade, such as. If you have a catastrophic hard-drive crash that requires you to initialize format or replace your boot drive. If you replace your internal hard drive with a larger, faster, or solid state drive.

How-To Factory Reset MacBook Air and other macs with macOS

If any essential OS X files become damaged or corrupted or are deleted or renamed. In other words, these instructions describe the process for installing, reinstalling, or upgrading OS X El Capitan. A sheet drops down, asking whether you agree to the terms of the license agreement.

Choose the disk on which you want to reinstall OS X by clicking its icon once in the pane where you select a disk. Your El Capitan installation or reinstallation begins.

Before we begin

The operating system takes 30 to 60 minutes to install, so now might be a good time to take a coffee break. When the install is finished, your Mac restarts itself.


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Maybe your Mac is playing up, and you want to see whether installing a clean copy of macOS fixes the issue? You may even want to consider actively wiping your data before reinstalling macOS, especially if you plan to sell your Mac, or donate it to a lucky friend or relative. If you do decide to wipe the slate clean, then as soon as you encounter the macOS Utilities window, make sure you:. Your Mac will now reinstall macOS. If you plan to sell your MacBook or pass it along to someone else, then you should quit this wizard so that the new owner can enter their own details.

MacOSX Lion - Reinstall Your OS Without Installation Disc

As long as you have an active Internet connection, you can reinstall macOS via Internet Recovery instead. Most home or office networks should be protected with one of these security standards, but if you want to double-check, then:. If you want to completely erase the Mac and get a factory reset Mac OS X version that is blank and back to default settings as if the computer was brand new, this is the process to achieve that.

This will reset Mac to the factory default version of Mac OS X on the computer, everything else will be removed in the process. On the other hand if you are setting it up yourself, go ahead and go through the initial setup process, it will be just like it was when the Mac was brand new, requiring setup of the user account and system software, setting up as a clean slate of factory default settings.


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No personal data will remain on the Mac, no apps, no files, nothing, it is entirely wiped clean of all data and then a fresh factory version of Mac OS X system software has been installed. All Rights Reserved. Reproduction without explicit permission is prohibited.