You can then check if it was set correctly by running the first command again. If you mean by 'factory settings' the original system which came with the computer, it's similar, but you have to use Internet Recovery, also explained in the link above. This will do a clean install of Yosemite. Which means, you can just enter it exactly like this: date -uĮnter the command and hit return. Reboot to Recovery Mode by holding -R at boot, use Disk Utility there to format the disk, then reinstall. To avoid trouble with timezones, we will use UTC time instead (). Below you see what the command should be for your current time and date –.
This command will be entered as follows: date -u Įvery bracket should be replaced with a two-digit number based on UTC time. For some reason, it might have been reset to 2001, in which case we need to set it to the right date. The result of this command will be the date that the system currently has been set to. Setting Up the Login Process But if you worry that somebody with a pronounced mean streak might restart simply by pulling the plug, then either use. Once in the terminal enter the following command and hit return/enter: date You can check this by going to utilities and opening the terminal. After scanning, then choose the files to delete. Then go ahead and Hit ' Scan ' in ' Clean up Junk ' part. Install Umate Mac Cleaner on your Mac and run it.
#How to reset mac to factory settings yosemite mac os x#
An alternative boot screen will appear, and it will contain a menu item titled Mac OS X Utilities. Follow the instructions and steps below to thoroughly wipe or clean your Mac: Step 1. You should see the Apple logo appear on the screen, which is your clue that you may release them. Now, if you haven’t used your Mac for a while, the error might be caused by an incorrect system date setting. Plug in your MacBook into the AC adapter, turn it on, and press and hold the Command key and the letter R. When you’re booting your Mac from the recovery partition and are planning to reinstall OS X, you might be met by the following message:Īn error occurred while preparing the installation. March 2013 Changing system date from Terminal – OS X recovery
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