How to erase and reset your Mac to factory settings
BootyourMacinrecoverymodebyholdingdownCommandandRuntilyouseetheApplelogoorotherimage.Selectanadminuserandtypeintheirpassword.ChooseDiskUtilityfrommacOSUtilities.SelectMacintoshHD,orwhateveryourbootdriveiscalled,ToonlyeraseyourMacwithoutresettingi...。參考影片的文章的如下:

