How does Mac restore factory settings?

How does mac reset to factory settings? Apple's Mac system has always been known for its stability and security, but sometimes Mac OS X may crash or fail to start properly for some reason, and then we need to restore the Mac OS X system again. Today will bring you in the absence of the recovery CD and restore USB flash drive in the case of Mac factory settings of the detailed tutorial, hope to help everyone.

1, first turn on the Mac power switch, while holding down the command +r key into the recovery mode, we can see the Mac OS x utility.

2. Select Disk Utility – then select the above is the Macintosh HD option, and the right choice is erased. It means to remove all content and reinstall the new system.

3. Restart your Mac when the earth sign appears, waiting for the update to complete. Here PC6 to remind you to do this operation of Mac users, because online recovery needs to download the full OS X system from Apple Server, depending on the network situation, the time required is also different, generally need 5-20 hours, during this period to keep the Mac in a working state can not power off the shutdown. After the update is complete, go to the Mac OS utility interface.

4. Choose to reinstall Mac OS X here

5, according to the prompt to choose the next step, wait for installation.