To reset your NVRAM, you use exactly the same procedure you once used to reset PRAM. Shut down your Mac. Press the power button, and as soon as you power up the laptop, hold down Command-Option-P-R. Drag USB data to another device on Mac. Connect USB and another storage device to your Mac computer. Open both USB and another storage device on Mac. Drag files and data from USB to another storage device. Scan and extract all data from USB with Mac data recovery freeware [recommended].
Beginning in Lion (10.7), there's a new feature in Mac OS X to assist you if things go really wrong, since you can't boot from disk anymore. This new feature is called, and it gives you a way to start 'from scratch' if you need to rebuild your Mac. There are a couple of methods for doing this, which both lead to the same place: A (8GB or larger), safely stashed in a drawer, which has a bootable OS on it, as well as an installer to put that OS on a hard drive. First up is the 'official' method, a utility introduced with Mavericks, called. This works with Lion, Mountain Lion, and Mavericks, all the versions of Mac OS that were distributed via the Mac App Store. Using this method is pretty straightforward: the Recovery Disk Assistant, plug in that, and follow the prompts.
After a little while you will have a bootable backup of your OS. An alternate method that dates back to the release of Lion is, formerly known as Lion Disk Maker. This is a nice wrapper for a set of Applescripts that will also create a USB drive to back up from. This was the nicest option before Apple built a utility of its own. It works much the same way as Apple's too, launch the app and follow the prompts and you end up with a USB drive you can boot from.
Keep in mind you can't install an older OS than your computer shipped with, but otherwise to use this newly minted installer all you have to do is plug in the USB drive, and hold down the Option key while the machine boots. This will give you your boot drive options, then choose the USB stick and you're all set.
One of the most common questions Mac users ask is, “How do I reset my Mac’s password?” If you’re using Mac OS X 10.7 Lion or 10.8 Mountain Lion, there are a couple ways you can go about it – and they’re both pretty easy to do. MacYourself previously published a popular article explaining. Unfortunately, those methods no longer work in 10.7 Lion or 10.8 Mountain Lion.
That doesn’t mean you’re out of luck – there are new ways to reset a password in Lion. As mentioned in our original article, it’s important to remember that anyone with physical access to your computer (whether it is a Mac, Windows or Linux) can eventually find a way in. There’s no such thing as complete security if someone who knows what they’re doing is sitting in front of your computer. If you’re truly concerned about the security of your files, you should look into using to encrypt them. Reset password using Lion Recovery If you bought a brand new Mac with Lion pre-installed, the hard drive includes with a recovery partition that gives you access to a bunch of different tools. Here’s how to take advantage of this utility to reset your Mac’s password:. Shut down your Mac and turn it back on while holding down the Command and R keys at the same time until you see the Lion Recovery screen.
From the menu bar at the top, select Utilities Terminal. In the Terminal window type resetpassword and press Enter.
Use the Reset Password utility to select your hard drive, choose your user account, and enter a new password. Reset Lion password with Single User mode Anyone running Mac OS X Lion can take advantage of this method:. Shut down your Mac and turn it back on while holding down the Command and S keys at the same time until your see a black screen with white text.
This is known as Single User mode. You can skip this step, but it’s recommended that you don’t because it will check the consistency of your hard drive. At the prompt, type fsck -fy and press Enter.
Once the disk check is complete and the prompt returns, type mount -uw / and press Enter. Type launchctl load /System/Library/LaunchDaemons/com.apple.opendirectoryd.plist and press Enter. Type ls /Users and press Enter. All of the usernames on the computer will be listed, which is helpful if you don’t know or remember what these are. Passwd /Users/username password while replacing username with one of the users displayed in the previous step and replacing password with the new password of your choice. You will likely get an error message about a file or directory not being found – it’s safe to ignore this. Type reboot and press Enter.
About MacYourself MacYourself was established in July 2008 by founders (and Apple enthusiasts) Ant and Frankie P., who wanted to create a tips & tricks site geared towards the average or new Apple product user. The name itself was an accident, shouted by Frankie P. In a moment of frustration when he couldn’t think of anything clever.
Immediately, a light went off in Ant’s head and he eventually convinced Frankie P. That it wasn’t as ridiculous as it first seemed.
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