

Resetting the password does not delete any of the information on the Mac, but it will prevent you from gaining access to other passwords that are saved in the system for things like mail accounts or wifi keys that have previously been entered and saved by the original user. It is possible to reset the admin password to a Mac quite easily providing you have the correct install disc to match the version of the software that is running on the computer. Click “Continue Log In” to login as the user account with the reset password.Enter and verify a new password, fill out the password hint field, and again click on “Reset Password”.Click “OK” to confirm the new keychain creation.Enter the Apple ID login information that is tied to the OS X user account and click “Reset Password”.Click the arrow button to bring up a "Reset Password" dialog.After incorrectly entering a user password three times at the Mac login screen, a message appears saying "If you forgot your password, you can reset it using your Apple ID".Using iCloud Recovery Mode (10.9.x & newer) Type resetpassword and follow the instructions.Restart and enter Recovery mode (for 10.7 Lion and newer OS only) Select the old account, press the Reset Password.After logging in to the new account, go to the Users & Groups preference pane.You can leave all fields in the personal information step blank.

Go through the steps of creating a new account.passwd /Users/username (without a trailing slash) and enter a new password. launchctl load /System/Library/LaunchDaemons/ (or /System/Library/LaunchDaemons/ in 10.6).There are many ways to reset the login password without installation media, here are three: Change the password in single user mode AppleSetupDone file from: /Volumes/Macintosh\ HD\ -\ Data/private/var/db Instead of single user mode, boot to recovery and use the Terminal Utility. Now - follow the official Apple triage steps: With macOS Catalina and many recent macOS - the built in tools guide everyone how to reset admin permissions without needing any of the single user mode boot tricks of old (left at the bottom for posterity and people running OS that were shipped before 2015)
