After restart, I cannot open Server.app that controls Mail service because it requires the unknown new password.While our netwrokd administrator was admitted to a hospital for an emergency surgery (he is now in coma), being as a temporary delegate, I was ordered by our Institution to turn OFF Mail funciton and to change the admin account password for Mac OS X Server 10.9.2 for security reasons.In case you forget your Mac’s administrator password, you can still reset it if you don't find it anywhere. If you’re in a secure environment where smart cards are required, you must insert your card and enter a personal identification number. To complete certain tasks, you must enter the name and password of an administrator to verify that you are a user with administrator privileges. Type: net user (you should get a list of accounts) Type: net.If you’re asked for an administrator name and password on Mac.To do that, however, I need the new password. How to reset your admin password on a Mac i.Currently Mail service is OFF (it had been turned OFF for security reason before password change), but I' going to need to turn it ON soon after the order is lifted. After that, your Mac will offer a password recovery procedure using your Apple ID.You are trying to use your Mac, but since you do not remember your password, you can not get past the login page. If you have forgotten your Mac’s password, type in a wrong combination three times.If I skip the update, Keychain asks passwords repeatedly, and without the old Keychain password, I can't launch and open Keychain Access.Then I found this. To update it, I need to enter the older Keychain password that I don't know. In the test, although resetpassword command in Recovery Mode successfully updated the account password, it didn't update default Keychain password at the same time.After restart, the OS asks if I want to update 'default Kecyhain password'. Thus I can still ask you.Thanks to the following instruction, I find a way to reset the admin password.I carried out a test of the same procedure on another Mac (10.9.2).
![]() Find My Administrator Mac OS X ServerIt's an emergency and I really need your help!In conclusion, TimeMachine recovery of the entire system to the status before changing admin password worked well. But I couldn't access to the "login" Keychain of the account in question from the root account.Is there a way to reset the default Keychain password without the old Keychain password?Or, is there a way to know the old Keychain password? Probably not.Or, do you think TimeMachine can undo my failure in changing the admin password and recover the old admin password?During this mail shutdown period, I assume many people have asked his health status by email. So if I carry out this on the server machine, The Server won't run properly and would ask passwords over and over again.On the test Mac I tried to activate root user, hoping the root user could change Keychain password without knowing the old Keychain password. Before actually try the following steps, it may be good to see if you need password for system recovery, following (step 5 in this page is the key), but just cancel when you are asked to choose date and time. Then this procedure may not work for you. If it were in network, for example, you would need password that has been lost at step 8. So, first I had to reset the admin password.Note: In my case, the destination for TimeMachine backup was a local partition (probably), so I didn't need network password to access it. To do that, however, I needed admin password. The OS will ask if you want to update Keychain password. The server won't work properly any longer. Now you get admin password at the cost of loosing Keychain password. Choose the admin account and set new password. Choose Time Machine > Open Time Machine Preferences…Restart the Mac with Command + R keys held down to enter Recovery Mode. ![]() Drag the folder Backups.backupdb on the current backup drive to the root level of the new backup drive. In the Finder sidebar, click the icon of the new backup drive. Open a new Finder window. In the Finder sidebar, click the icon of the current backup drive. Topo usa for macIn Recovery Mode, Select Restore from a Time Machine Backup, then click Continue.Select the date and time of the backup you want to restore, then follow the onscreen instructions.In my case, I successfully recovered admin password as well as default Keychain password. This may take some time to complete because all the backups will be copied.After the copy has completed, you can eject the eternal drive.Restart the machine with Command and R keys held down to enter Recovery Mode.
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