Kclay1512

Q: locked out of my mac

I have recently purchased a mac from the University of Utah and am trying to update the adobe flash player but in order to do so I need to enter the mac password.

The user name is "user" I have tried every combination I can think of that a university would use but no luck. If I could reset the whole mac, including the accounts, that would be awesome. Thanks,

iMac, OS X Yosemite (10.10.1), (20-inch, Mid 2007)

Posted on Jan 9, 2015 8:51 PM

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Q: locked out of my mac

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  • by Drew Reece,

    Drew Reece Drew Reece Jan 9, 2015 9:19 PM in response to Kclay1512
    Level 5 (7,537 points)
    Notebooks
    Jan 9, 2015 9:19 PM in response to Kclay1512

    You need to use the 'resetpassword' tool to reset user permissions. It is in recovery mode…

     

    Boot holding cmd+R to activate recovery mode.

    Open Terminal from the menu, type resetpassword & hit return.

    In the application that opens reset the password on your user account, see if there is another admin account too. Leave the root account alone!

     

    Quit the app, quit Terminal and Reboot.

     

    Here are Apple's older instructions for reference (they don't seem to have current ones)

    OS X: Changing or resetting an account password (Snow Leopard and earlier) - Apple Support

     

    I'd strongly suggest you consider creating a new user account in the System Preferences > User & groups, however if the current account is a 'standard' user you will not have permission to do that.

     

    Recovery mode can also be used to erase the entire Mac & reinstall the OS ask if you need info on that it is best to se a fast internet connection (e.g ethernet) - it should give you a clean system if done correctly. Think about what files you need to backup before you begin

  • by Linc Davis,

    Linc Davis Linc Davis Jan 10, 2015 4:12 PM in response to Kclay1512
    Level 10 (207,963 points)
    Applications
    Jan 10, 2015 4:12 PM in response to Kclay1512

    Before buying a second-hand computer, you should have run Apple Diagnostics or the Apple Hardware Test, whichever is applicable.

    The first thing to do after buying the computer is to erase the internal drive and install a clean copy of OS X. You—not the original owner—must do that. Changes made by Apple over the years have made this seemingly straightforward task very complex.

    How you go about it depends on the model, and on whether you already own another Mac. If you're not sure of the model, enter the serial number on this page. Then find the model on this page to see what OS version was originally installed.

    It's unsafe, and may be unlawful, to use a computer with software installed by a previous owner.

    1. If you don't own another Mac

    a. If the machine shipped with OS X 10.4 or 10.5, you need a boxed and shrink-wrapped retail Snow Leopard (OS X 10.6) installation disc from the Apple Store or a reputable reseller—not from eBay or anything of the kind. If the machine is very old and has less than 1 GB of memory, you'll need to add more in order to install 10.6. Preferably, install as much memory as it can take, according to the technical specifications.

    b. If the machine shipped with OS X 10.6, you need the installation media that came with it: gray installation discs, or a USB flash drive for a MacBook Air. You should have received the media from the original owner, but if you didn't, order replacements from Apple. A retail disc, or the gray discs from another model, will not work.

    To start up from an optical disc or a flash drive, insert it, then restart the computer and hold down the C key at the startup chime. Release the key when you see the gray Apple logo on the screen.

    c. If the machine shipped with OS X 10.7 or later, you don't need media. It should start up in Internet Recovery mode when you hold down the key combination option-command-R at the startup chime. Release the keys when you see a spinning globe.

    d. Some 2010-2011 models shipped with OS X 10.6 and received a firmware update after 10.7 was released, enabling them to use Internet Recovery. If you have one of those models, you can't reinstall 10.6 even from the original media, and Internet Recovery will not work either without the original owner's Apple ID. In that case, contact Apple Support, or take the machine to an Apple Store or another authorized service provider to have the OS installed.

    2. If you do own another Mac

    If you already own another Mac that was upgraded in the App Store to the version of OS X that you want to install, and if the new Mac is compatible with it, then you can install it. Use Recovery Disk Assistant to prepare a USB device, then start up the new Mac from it by holding down the C key at the startup chime. Alternatively, if you have a Time Machine backup of OS X 10.7.3 or later on an external hard drive (not a Time Capsule or other network device), you can start from that by holding down the option key and selecting it from the row of icons that appears. Note that if your other Mac was never upgraded in the App Store, you can't use this method.

    3. Partition and install OS X

    a. If you see a lock screen when trying to start up from installation media or in Recovery mode, then a firmware password was set by the previous owner, or the machine was remotely locked via iCloud. You'll either have to contact the owner or take the machine to an Apple Store or another service provider to be unlocked. You may be asked for proof of ownership.

    b. Launch Disk Utility and select the icon of the internal drive—not any of the volume icons nested beneath it. In the  Partition tab, select the default options: a GUID partition table with one data volume in Mac OS Extended (Journaled) format. This operation will permanently remove all existing data on the drive.

    c. An unusual problem may arise if all the following conditions apply:

              OS X 10.7 or later was installed by the previous owner

              The startup volume was encrypted with FileVault

              You're booted in Recovery mode (that is, not from a 10.6 installation disc)

    In that case, you won't be able to unlock the volume or partition the drive without the FileVault password. Ask for guidance or see this discussion.

    d. After partitioning, quit Disk Utility and run the OS X Installer. If you're installing a version of OS X acquired from the App Store, you will need the Apple ID and password that you used. When the installation is done, the system will automatically restart into the Setup Assistant, which will prompt you to transfer the data from another Mac, its backups, or from a Windows computer. If you have any data to transfer, this is usually the best time to do it.

    e. Run Software Update and install all available system updates from Apple. To upgrade to a major version of OS X newer than 10.6, get it from the Mac App Store. Note that you can't keep an upgraded version that was installed by the original owner. He or she can't legally transfer it to you, and without the Apple ID you won't be able to update it in Software Update or reinstall, if that becomes necessary. The same goes for any App Store products that the previous owner installed—you have to repurchase them.

    4. Other issues

    a. If the original owner "accepted" the bundled iLife applications (iPhoto, iMovie, and Garage Band) in the App Store so that he or she could update them, then they're irrevocably linked to that Apple ID and you won't be able to download them without buying them. Reportedly, Mac App Store Customer Service has sometimes issued redemption codes for these apps to second owners who asked.

    b. If the previous owner didn't deauthorize the computer in the iTunes Store under his Apple ID, you wont be able to  authorize it immediately under your ID. In that case, you'll either have to wait up to 90 days or contact iTunes Support.

    c. When trying to create a new iCloud account, you might get a failure message: "Account limit reached." Apple imposes a lifetime limit of three iCloud account setups per device. Erasing the device does not reset the limit. You can still use an iCloud account that was created on another device, but you won't be able to create a new one. Contact iCloud Support for more information. The setup limit doesn't apply to Apple ID accounts used for other services, such as the iTunes and Mac App Stores, or iMessage. You can create as many of those accounts as you like.