Disk first aid mac os x

If this happens to you, quitting and then relaunching the Dock may be the cure. Launch it, and select the Dock process from the list that appears see "Dock Quit". Then select Quit Process from the Processes menu. The Dock will vanish and then reappear in about ten seconds. Force Quit To get out of a freeze, the Force Quit Applications window lets you choose an application to force quit.

Verify and Repair HFS+, APFS Drives with Disk Utility's First Aid | Other World Computing Blog

This almost always fixes a freeze. And because the freeze probably affected only one application, you can save your work in any other open applications before doing this. With those rare freezes so severe that you can't get the Log Out command to work, you may need to restart your Mac. However, before you do, let it sit idle for a minute or two.

THAW A FROZEN MAC

This gives it a chance to write cached data from RAM to the hard disk something it may still be able to do, despite the freeze , possibly preventing data corruption. After you've done that, use whatever method works with your particular model pressing command-control with the power button on laptops or with the reset button on desktop Macs. Most Mac users have come across the dreaded system bomb from time to time, but the types of crashes that cause it do not occur in Mac OS X.

Don't start celebrating quite yet, though--OS X has its own version of the system crash. It's called a kernel panic-- and it's just as debilitating as any OS 9 crash. You'll know it's happened to you if strings of text containing error messages appear over the current display on your screen--right before everything stops working.

Kernel panics are rare but can be triggered by familiar demons: For example, as of OS X Here is how to recover from a kernel panic:. Restart If a kernel panic occurs, just restart your Mac--you should be fine. Reinstall or Check for Updates Typically, the only thing you can do to prevent the panic's return is to avoid whatever caused it. In the long term, you need to get a bug-fix upgrade to the offending software.

Otherwise, on the off chance that the kernel panic was caused by corrupted software rather than a bug, try to reinstall the suspected culprit. When your Mac won't even start up, you know you're in trouble. In Mac OS X, that problem can take any of several forms.

You may wind up with a blank "blue screen of death" or a ripped-in-half System Folder icon, or--most unsettling for a Mac user--you may get dumped into a command-line mode displaying several lines of error messages. Try the following tricks:. Select the OS 9 start-up icon. In OS 9, open the Startup Disk control panel.

Make sure you're using version 9. Then select an OS X system and restart. With luck, OS X will now start up. The workaround? Remove the card or device from your Mac. Then check with the hardware manufacturer or a Mac Web site, such as my own MacFixIt for information about a possible permanent solution such as an OS or firmware update that allows the card or device to work. In some cases, you can still use the hardware if you reconnect it after start-up.

Run a Disk-Repair Utility You may be able to fix your start-up problem by repairing corrupted data. Unfortunately, the current version of Disk First Aid won't make repairs to the start-up volume. As of this writing, there's only one third-party repair utility that can run from Mac OS X: They may be able to fix problems that Disk First Aid misses. Restart, and hold down command-S. This dumps you into single-user mode.

You'll see a distressingly long block of white and yellow text against a black background. Don't despair; this is just a variant of OS X's Unix command-line interface. This will initiate a Unix repair function called fsck for file system check. 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.

Repair a disk using Disk Utility on Mac

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.

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This freeware utility should unlock and delete any file or directory of files dragged onto it. 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?

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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.

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