Mac boot commands snow leopard
To resolve freezes and crashes, or simply give your Mac a tuneup, begin with Apple's built-in maintenance tools before you reach for third-party repair applications or reinstall your OS.
Open your Applications folder and locate the Utilities folder within it. You can scroll down until you see it or press "UT" to navigate immediately to it.
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Press "Command-O" or double-click on the Utilities folder to open it. Locate the Disk Utility application and double-click on it to launch it. Click on the "First Aid" tab at the top of the Disk Utility interface.
In the list on the left side, click on the name of your startup disk. Activate the "Show Details" checkbox so you can see the progress of your verification operation. Click on the "Verify Disk" button below the details window. Wait for the operation to complete. If you see a notice that says "Volume [your drive name] appears to be OK" in green, your drive needs no further attention.
If you see a red error message that indicates problems, you'll need to restart from your Leopard Installer DVD to repair your startup disk. If your system uses a slot-loading internal optical drive, press the DVD into the empty drive slot. Open the Apple menu and choose "Restart. Just as with its Windows counterpart, OS X Safe Boot should be used to help troubleshoot issues that may be caused by corrupt or incompatible software, or to help isolate software issues from hardware failures. Keep holding Shift until you see a gray progress bar appear beneath the Apple boot logo.
15 Startup Key Combinations for Mac
Keep holding the keys until your Mac reboots itself and you hear the startup chime a second time. At this point you can release the keys and your Mac should boot as normal.
To disable these features and have the system boot normally without any extra options, you can erase them from the nvram by either resetting it or, more specifically, by running either of the following commands in the Terminal these will reset the boot arguments instead of resetting all the nvram variables :. Have a fix? Post them below or e-mail us!
Mac Startup Keyboard Shortcuts
Be respectful, keep it civil and stay on topic. We delete comments that violate our policy , which we encourage you to read. Discussion threads can be closed at any time at our discretion. Don't show this again. Computers Boot argument options in OS X The OS X boot arguments are useful for troubleshooting problems with system startup and how the system behaves when running.
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