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I am using a surplussed computer that has an admin password that has long been forgotten by my agency. as such I am unable to install the new flash player on this computer. is there a way that I can continue to use the older version and get past the 'blocked plugin' problem? -Thanks. Charlie
Let’s say you totally forgot the password to log on to your Mac. Or maybe you purchased a used Mac from someone else and they’ve got it locked down. There are numerous ways to reset a password with no OS X discs.
This tutorial may ruffle some feathers, but it addresses a topic that a ton of people ask about all the time. Yes, it’s startling to think that anyone could theoretically walk up to your computer and gain access within minutes. Before you go thinking that Mac OS X has a severe vulnerabil
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Windows or Mac OS?
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Let’s say you totally forgot the password to log on to your Mac. Or maybe you purchased a used Mac from someone else and they’ve got it locked down. There are numerous ways to reset a password with no OS X discs.
This tutorial may ruffle some feathers, but it addresses a topic that a ton of people ask about all the time. Yes, it’s startling to think that anyone could theoretically walk up to your computer and gain access within minutes. Before you go thinking that Mac OS X has a severe vulnerability that makes it less secure than other operating systems, think again. Anyone with physical access to your machine (whether it is Windows, Linux, or Mac) can eventually find a way in if they know what they’re doing. There are ways of bypassing nearly any security measure when a hacker is literally sitting right in front of your system.
The information here has previously been made available from many different sources online and is presented with the intention of helping people with legitimate reasons for resetting their Mac OS X password. A few of the methods floating around the Mac community have been compiled here in one easy-to-reference place. System admins responsible for supporting entire organizations and users who bought used Macs are the folks most likely to benefit from this.
Important Note:
This tutorial was written for Mac OS X 10.4, 10.5 and 10.6. Please check out the updated version of this post if you’re trying to reset the password on a Mac running 10.7 Lion or 10.8 Mountain Lion.
The third method of resetting your Mac’s password requires some additional explanation. Rather than simply changing the password like the previous two methods do, this one fools the operating system into believing it has never been started before. This means when you restart the machine, it will take you through the entire setup & registration process all over again. Do not worry, all of your pre-existing data is still available. Just continue with this process and do not choose the option to transfer or migrate information to the Mac.
Once you’re done, log in with your new admin account and go to System Preferences > Accounts. You may have to click on the lock icon in the lower-left corner before making changes here. You should see your original user account(s) in the left column. Try clicking on one of them to convert it to a standard user account (uncheck “Allow user to administer this computer”) and change the password. You should be able to successfully log in to that account now and access all of your files and programs. If you want, you can log back in with your new admin account and re-check the “Allow user to administer this computer” option in System Preferences to grant admin privileges to the original user again.
That should cover it! As always, remember messing with single-user mode and Terminal is risky and may lead to trouble if you make mistakes. Considering you’re already locked out of the computer, though, you’ll probably be willing to take your chances at this point.
One last thing… if you have a Keychain Access password, you will probably need to reset that as well. You can do this by selecting “login” under Keychains on the left and choosing Delete from the Edit menu. You’ll lose everything in the Keychain, but you’ll now be able to start fresh and add new ones.
Resetting a user's password in OS X Lion and Mountain Lion
Important: Passwords for administrator accounts should not be blank.
Resetting the original administrator account password
In OS X Lion or later, you can reset your user password with your Apple ID.
In Mac OS X v10.6.8 or earlier, follow these steps to reset a password when there is only one administrator account on the computer, or if the original administrator account needs a password reset. "Original" administrator account refers to the one that was created immediately after installing Mac OS X. If the original administrator password is known, that administrator account may be used to reset the passwords of other administrator accounts using the steps described above. These steps require an optical drive; if your Mac does not have an optical drive and you have a Mac OS X v10.6 Install disc, see below.
After following these steps, you'll want to also follow the steps in this article.
Mac OS X v10.6: Resetting the original administrator account password on a Mac that has no optical drive
These steps require a second computer that has an optical drive.
Note: If the second computer is a Mac, make sure Mac OS X v10.5.3 or later is installed. If the second computer is a PC, make sure the DVD or CD Sharing Update 1.0 for Windows is installed.
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Thank you very much for the help!
Charlie
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