Max Max 2 2 gold badges 6 6 silver badges 14 14 bronze badges. Which OS X version are you running? Sorry, should have said. It's running Snow Leopard. Never had an install DVD, it came pre-installed. I've been considering trying to burn one with this old laptop I dug out. I've also been considering DiskWarrior, is it likely to be able to fix it? Matt Matt 5 5 silver badges 14 14 bronze badges. You're right, it was a malfunctioning hard drive as opposed to just dodgy entries in the filesystem. I do have backups, specifically Time Machine, but I ended up just using DiskWarrior to create a "preview" of the hard drive, cloning that to an external drive, and booting from the external drive.

It's temporary until I get a chance to replace the internal hard drive, but all's working smoothly at the moment. I actually tried it with -r -Rc doesn't seem to work. You saved my day! Running this command twice fixed my disk when Disk Utility couldn't.

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Although Disk Utility still reports errors on the filesystem, at least the volume mounted upon rebooting. The system may boot to the desktop with the above instructions and look normal, but the partition will likely still be corrupt and cannot be repaired. After the suggested time machine backup, restore from this time machine backup in recovery mode. Phil Faber Phil Faber 39 1 1 bronze badge. Featured on Meta. That was easy. The Mac is telling you that once in S. The trick is how you find the partitions names you might have and fsck them. You sound very impatient, not good for running disk repair.

Be patient, it can take a long time if the drive is large, slow, or failing. If you reboot in the middle of fsck running you can damage the disk and cause data loss. I hope you have a good backup handy. Name required. Mail will not be published required. All Rights Reserved. Reproduction without explicit permission is prohibited. Jack Johnsman says:.

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December 29, at am. Jean says:.

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  • How to Repair a Mac Disk with fsck from Single User Mode.

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Booting into single-user mode on a FileVault 2-encrypted Mac

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Stuck inside single user mode ! - Apple Community

September 18, at am. If fsck makes any repairs, you'll get a message that says "File system was modified. The first run may uncover additional errors that will require a further run to fix. Once all repairs are made, type reboot and press return. If you get the start-up error that dumps you immediately into the command-line interface, you can run fsck directly from there, without needing to restart. Though you can spend time trying to track down and remove the offending file s , it's often easier to start up from the OS X installation CD and reinstall OS X being careful not to select the option that erases the disk.

Doing this will leave almost all your custom changes intact. But if you've updated the OS to a version that's newer than the one on the CD, you'll have to reinstall those updates, too. OS X will sometimes refuse to let you move a file to the trash--typically informing you that you don't have "sufficient privileges. Depending on the privileges associated with your log-in, you may run into problems see "How Privileged Are You?

Here's how to get OS X to cooperate:. Unlock the File A common reason for the inability to delete a file in OS X is that the file is locked. The easiest way to fix this--if it works--is to deselect the Locked option in the file's Show Info window similar to OS 9's Get Info windows.

You may run into trouble if the file was locked under OS 9. In that case, try DropNuke www. This freeware utility should unlock and delete any file or directory of files dragged onto it.

How to Exit Single User Mode on a Mac

Otherwise, go back to OS 9 to unlock and delete the file. Occasionally, OS X may allow you to place a file in the Trash but then refuse to delete it. If that happens, try placing the file in a folder and dragging the folder to the Trash before selecting Empty Trash. You can also try to reboot in OS 9 and delete it.

Be careful to remove the file from the Trash before switching to OS 9, or you may have trouble locating it. There may be a problem preventing you from deleting the file; hopefully, the utility will fix it. Be an Administrator Still no luck? Open Users System Preference. For the name of the currently logged-in user, look in the Name column.

Then check the Kind column see "Three of a Kind". If the Admin designation does not appear next to your name, you're not an administrator. There are some things an administrator can do that other users can't. For example, regular users can't add files to or remove them from the Applications folder. If you're an administrator and another user isn't for example, if your daughter has her own log-in on the home computer , you can opt to give that user administrator status as well.

To do this, highlight the user name and click on Edit User. Prime examples are the files in the System Folder. If you try, for example, to move a file from the System Folder, you'll get a message such as "The operation cannot be completed because you do not have sufficient privileges for item or folder name " or "The item item name could not be moved because system cannot be modified.

However, if you are an administrator and you want to modify the contents of the System Folder, you can do so by giving yourself root access. There are several ways to accomplish this bit of OS X magic. Three of a Kind To make a user an administrator, select his name, click on Edit User, and choose the appropriate option. Root of the Matter To enable root access or disable it, if it's already been enabled , use NetInfo Manager. One method is to log in as the root user.

Before you can do that, you have to set up a root account. From there, select System Administrator Root from the pop-up menu that appears and establish a password. Once you've set up the account, restart as usual and enter the word root as your user name, along with the password you selected. You will then have access to nearly everything on the drive.

Be aware that logging in as root can be dangerous: the root can bring down a system by mistakenly deleting or modifying the wrong files. It lets you launch an application that you couldn't otherwise launch or open documents that you couldn't otherwise open unless you had root access or went to the command line. To use it, simply drag onto the Pseudo icon any application you want to work with. The program will open, prompting you for your admin password along the way.

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  7. After entering the password, you'll have root access to the application and to any files you open from within it. This means that you can use TextEdit to open documents such as preferences files in the System Folder or even in OS X's invisible Unix directories; you would otherwise be prohibited from opening them.