Safe mode and single-user mode are two of the special start-up modes that your Mac can be powered up to. Starting up in Safe Mode can take a bit longer than normal as your Mac runs a number of system checks.
Safe Mode Up first is safe mode, one of the easiest ways to isolate and fix many Mac problems. Safe mode allows you to troubleshoot problems you may be having in starting up your Mac, working with specific apps, or system-wide issues. It will also disable some system components, and if it successfully completes the checks, it will finish by bringing you to the standard desktop, though with certain functions disabled. What Does Safe Mode Do? Safe mode only allows the most basic system kernel extensions to be loaded.
This will prevent third-party kernel extensions from affecting the startup process, and from being available to use once safe mode drops you into the desktop. Safe mode allows only system fonts that are provided with the operating system to load; all other fonts are disabled. Keep the shift key depressed until you see the login window or the desktop.
If the shift key is depressed before the chime occurs, the system will ignore the shift key signal and continue to boot normally. When the login screen is shown, the upper right-hand corner will display the words Safe Boot. In the window that opens, select the Software category in the left-hand sidebar.
In the central area, you should see Boot mode: Safe. Safe mode tested and repaired if applicable the startup drive. The issue could have been a drive in poor health. You may want to make sure you have a backup strategy in place.
Safe mode also disabled all your startup and login items. If, when you restart your Mac using the normal boot process, the problem returns, it could be a corrupt, out-of-date, or conflicting login or startup item. Font issues are usually limited to specific apps, so when you return to the normal boot up process, be sure to try the app that was giving you problems.
System, kernel, and font caches were deleted. Any one of these cache files could have been corrupt, or contained out-of-date information that could have caused the issue you were having. In order to complete the repair, your Mac is automatically restarted.Forgot your password? Or sign in with one of these services. I knew I had to replace a certain file on the root with a file I had stored on another drive. First we need to enter Single User Mode. For Chameleon-type hackintosh bootloaders, hit any key then type —s enter.
For legit Mac users I think you hold Apple and s key as you boot. This tells us that we are currently on disk 0, partition 1 ignore the major, minor. The first command will check your disk for errors and the second will give you write access to the root. We need to know what the computer has called our drives and partitions. We use the ls command similar to dir in DOS.
Note this list seems to change and there is no guarantee that partitions named in the GUI using diskutil will have the same names here. Check the file system used by the drive we want to mount. Now we create a folder to mount the drive to. USB hard drives and flash drives would use similar syntax depending on what file system the device was formatted with eg.Mac Command + R not working. No recovery partition. Disable (SIP) System Integrity Protection
At this point you should be able to do the things you wanted to do cp files etc. NTFS drives are mounted as read-only and there is no native support for write access. When you are finished, use the reboot or shutdown command. NOTE: Please do not reply to this thread to troubleshoot your problems. I'm not an expert, I just taught myself what I needed to know to get the job done. Single User Mode has an excellent man command short for manual.
This is the best way to teach yourself. If you have something useful to add, for example you know how to get SMB shares to mount, then please contribute. I've been looking for this info all day and was getting dead ends.
Thanks a ton!!! After usage over time, If Mac performance has degraded, any important data is missing or you need an ordinary regular maintenance.Dinesh lal yadav wife
Then, it is good to repair disk in Safe mode. Please backup before you attempt all these. Launch Disk Utility and find these 2 commands.Builders in greater noida
You need to be a member in order to leave a comment. Sign up for a new account in our community.One troubleshooting tip I always recommend is to create a spare admin user account on your Mac. Its purpose is to provide you with an admin user account that is pristine.
If for some reason you find yourself locked out of your Mac, either because you have forgotten your user account password or your Mac is acting up on you, it is still possible to force your Mac to create a brand new administrator account with a new user ID and password letting you hopefully regain access to your Mac.
Once you have administrative access to your Mac, you can reset your old forgotten password and then log out and log back in with your regular account. This method of gaining access to your Mac has a few drawbacks.
Start by turning off your Mac. If you're not able to shut down normally, press and hold the power switch. You can use Single User mode for many different troubleshooting processes, including repairing a startup drive that won't start up.
Your Mac will display scrolling lines of text as it boots up. You need to mount the startup drive, so you can access the files that are located on it. This will make your Mac behave the way it did the first time you turned it on, when it guided you through the process of creating an administrator user account. This process will not remove or alter any of your existing system or user data; it will just allow you to create one new admin user account. To restart your Mac in this special mode, we need to remove one file that tells the OS whether the one-time setup process has already been performed.
With the applesetupdone file removed, the next time you restart your Mac, you will be guided through the process of creating the necessary admin account.Root zte blade t2 lite
Enter the following at the prompt:. Your Mac will restart and display the Welcome to Mac screen. Follow the step-by-step guide to create your new admin user account.
Once you finish creating the accountyour Mac will log you in with the new account. You can then proceed with whatever troubleshooting steps you need to perform. Apple Macs iPad. Tweet Share Email. Press enter or return on your keyboard. Your startup drive is now mounted; you can access its files and folders from the command prompt. Press enter or return.Warning: This article is about trying to accomplish some things in Mac or iMac single-user mode when your system is in trouble.
Be careful with all of these steps. I was working with iMovie, put it into full-screen demo mode, and the display went nuts and the system locked up. The little timer animation runs briefly, then stops, and the system just sits there. I assume this means there is a problem with the video card or display.
After many repeated attempts I was just now able to get the system to boot into hardware test mode with the install CD, but the short test showed no errors, even though the 30 lines are still on the display.
I can get the Mac to boot into single-user mode, where I can work at the command line. I recommend not plugging in your USB drive yet. Then boot the system into single-user mode. Which seems like a security risk. I could walk into any office, reboot a Mac into single-user mode, then wipe their hard drive. The fsck command takes a while to run, maybe 5 or 10 minutes, although that will vary depending on the size and speed of the drive.
This shows which disk devices are currently on your system. Next, plug in your USB drive. After a few moments you should see some sort of message on screen.
If your USB device is formatted differently, use another mount command. If these steps have worked for you, great, begin copying your files. In short, here's what I had to do. First, per some other websites, I ran these launchctl commands:. Those may have helped, I don't know. One of them caused the system to start posting information to my display, which combined with the vertical lines was a real pain in the butt.
There are two "com. So I created my mount point like this:. I haven't looked into those plist files yet, but something about loading them was keeping my Mac from being shut down properly. So to shut my system down, I first unloaded all of the plist files like this:. At that point I think you can shut down your system by typing exitbut I was trying to do something else next, so I used the reboot command instead. Regarding that mount point, I don't think there's anything special about using the Volumes directory.
In my younger days as a Unix admin, I'd create a mount point wherever I wanted to, so unless OS X is doing something unique, you can probably create a mount point wherever you want. As mentioned at the beginning of this article, these notes pertain to a model iMac running Mac OS X Other Mac operating systems are probably at least slightly different. I hope these notes have been helpful, and will save you a little time. I know they would have saved me several hours if I knew about all of this last night.
How to access a USB drive while in Mac single-user mode. By Alvin Alexander. Last updated: September 30, How to run a Unix shell script from the Mac Finder.Over the years, our training curriculum and instructors have provided Mac Forensics students with many ways to collect detailed forensic evidence from a Mac OS X system.
A forensic examiner may then issue a few simple commands to extract basic machine information without actually booting into the operating system. Therefore, if an examiner comes upon an OS X machine that is running with encryption enabled i. FileVault, it may not be wise to reboot the machine, as the data is fully encrypted after the restart. A live data acquisition, using a tool such as MacQuisitionmay be a better choice under these circumstances.
Instead, a FileVault 2 login screen with a password prompt appears. Before booting a machine into Single-User mode, an examiner should understand two additional key points:. Therefore, use caution and have a full understanding of each command before proceeding.
Booting Into Single-User Mode. During the Single-User mode boot process, the boot sequence appears as white text on a black screen as it executes. The boot sequence completes and a root shell prompt appears. This causes a mounted file system to change from read-only status to read-write not write protected! This causes the machine to boot to the operating system again, not good! You can learn more about acquiring data from a Mac computer here on our blog or by visiting BlackBag TV.
For more information about MacQuisition, our 3-in-1 data acquisition solution, please visit our MacQuisition product page.
How to Boot in Single User Mode on a Mac
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Andy Administrator. Joined 7 Jan Messages Reaction score 6 Points AppleSetupDone then enter.
Reboot by typing reboot then enter. Complete the setup process, creating a new admin account. AppleSetupDone -r 1 root wheel 0 Apr 4 Joined 12 Nov Messages 1 Reaction score 0 Points 1. This does not work for me. Every time I do this, I complete the account creation and after I fill out the page where it asks for my full name, the account name, password, and password hint, it tells me it can not create an account with the name I gave it.
Then it just freezes and I have to hard reboot the mac. Also this has happened on 3 different computers, 3 different models.
What should I do? You must log in or register to reply here.Xmeye cameras
7 Mac Startup Options Every OS X User Should Know
These steps replace the Command-S method, which doesn't work with the recommended settings on current Mac computers. Start up your Mac in single-user mode or verbose mode If you're an advanced user who is comfortable with UNIX, you can use single-user mode or verbose mode to help isolate issues related to startup.
Select Disc Utility from the Utilities window, then click Continue. If the volume is already mounted, this option is dimmed. Then enter your administrator password when prompted. Quit Disk Utility. Choose Terminal from the Utilities menu in the menu bar. You can now enter UNIX commands. Verbose mode Turn on your Mac, then immediately press and hold Command-V.
Continue holding the keys until you see white text on the screen. Then log in to continue starting up in verbose mode.
Create a new Mac Administrator account using Single User Mode
To exit this mode and start up normally, type rebootthen press Return. Yes No. Character limit: Maximum character limit is
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