Time Machine password recovery

I changed my password for the iMac and seem to have mistyped the same way twice. Now I can't access any secure function, such as changing passwords, allowing changes to the system prefs, su, sudo, and so on. I have a Time machine backup from before the change and I would like to recover the password by the recovery from that. Unfortunately I seem to be unable to suss out the incantation appropriate to do. Do I have to reboot in recovery mode, and which would allow a specific restore TM backup? El Capitan 10.11.3

Try to boot into recovery (command-R) Mode and then open Terminal from the utilities Menu bar. And type resetpassword. See if you can reset the admin password you're wrong.

Tags: Mac OS & System Software

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  • New router lost Time MAchine

    Now later in my problems without end with networking...

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  • Time Machine broke my office

    My story I had just to edit a picture on my desk at the right size.

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    Please, back up all data before proceeding.

    This procedure will unlock all your user (not system files) files and reset their ownership, permissions and default access controls. If you have voluntarily set special values for these attributes on any of your files, they will be be restored. In this case, either stop there, or be ready to recreate the settings if necessary. Do that after checking these settings that did not cause the problem. If none of that is meaningful to you, you need not worry about this, but do not follow the instructions below.

    Step 1

    If you have more than one user, and the one in question is not an administrator, then go to step 2.

    Triple-click anywhere in the next line to this page to select this option:

    sudo find ~ $TMPDIR.. -exec chflags -h nosappnd,noschg,nosunlnk,nouappnd,nouchg {} + -exec chown -h $UID {} + -exec chmod +rw {} + -exec chmod -h -N {} + -type d -exec chmod -h +x {} + 2>&-

    Copy the selected text in the Clipboard by pressing Control-C key combination.

    Launch the Terminal application integrated in one of the following ways:

    ☞ Enter the first letters of his name in a Spotlight search. Select from the results (it should be at the top).

    ☞ In the Finder, select go utilities ▹ of menu bar or press the combination of keys shift-command-U. The application is in the folder that opens.

    ☞ Open LaunchPad and start typing the name.

    Paste in the Terminal window by pressing Command + V. I tried these instructions only with the Safari browser. If you use another browser, you may need to press the return key after pasting.

    You will be asked your password of connection that are not displayed when you type. Type carefully, and then press return. You can get a warning to be careful. If you do not have a password, you will need to configure one before you can run the command. If you see a message that your user name "is not in the sudoers file", then you have not logged as an administrator.

    The command may take several minutes to run, depending on the number of files you have. Wait for a new line ending with a dollar sign ($) to appear, and then quit Terminal.

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    Take this step only if you have trouble with the phase 1, if you prefer not to consider, or if this does not resolve the problem.

    Start in recovery mode. You may be prompted to select a language, then the OS X Utilities appears.

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    resetp

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    resetpassword

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    Select your boot volume ("Macintosh HD", unless you have given it a different name) if not already selected.

    Select your username in the menu option allows you to select the account if not already selected.

    Under Reset Home Directory Permissions and ACLs, click the reset button.

    Select

    ▹ Restart 

    in the menu bar.

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