#HOW TO REPAIR MAC OS X STARTUP DISK INSTALL#
Your computer should then install the latest version of OS that it can install. Re-install MacOSX: click on " Reinstall Mac OS X" > "Continue".Select the Mac OS Extended (Journaled), give a name to your disk and click on Erase.Select the startup disk and go to the Erase Tab.
#HOW TO REPAIR MAC OS X STARTUP DISK HOW TO#
Also, it is advised to make a time machine back up of your computer if possible before following the procedure. Click on the First Aid button in the toolbar. Select the indented (usually, Macintosh HD) volume entry from the side list. Note that when you remove cache files, they will be recreated the next time you run the application. Choose Disk Utility and click on the Continue button. A cache file is a temporary data file created by apps, browsers, and many other programs to help your Mac run faster. Immediately after the chime hold down the Command and R keys until the Utility Menu appears. To reinstall your Mac's OS without an installation disc you need to firstly make sure that you keep your Mac turned on during the whole procedure, and that your Mac is connected to the internet. Repair the disk by booting from the Recovery HD. How to check the free space on your startup disk Even if your Mac hasn’t warned you that the startup disk is almost full, you should regularly check how much free space you’ve got left so you can fix any problems as they develop. In this article we will show you how to reinstall Mac OS without disc. So if your Mac’s startup disk is full, the only way to fix it is to clear out various files to create more free space. That feature is designed primarily to prevent potentially malicious software from accessing important files on your Mac. That’s because that feature was replaced by something called System Integrity Protection. In the column on the left, select the volume you want to repair, and then on the right, click the First. Follow the instructions on the screen, and when the menu bar appears, from the Utilities (Mac OS X 10.5 and later) or Disk Utilities (Mac OS X 10.4) menu, select Disk Utility. MacOS includes a recovery partition that allows you to easily erase all data on your Mac and reinstall your OS without an installation disc. Starting with OS X 10.11 El Capitan, you are no longer able to repair disk permissions explicitly. To force your computer to boot from the DVD, hold down the c key.
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