Go to Apple Support for specific instuctions.ĭisk Utility will report back whether or not there were any problems, and whether or not it could fix any problems.
The specific sequence of how to do this varies depending on what version of OS X you're running. If you don't have access to the CD, you can also run the UNIX command fsck from the Terminal in Single User Mode. You can boot off the OS X Installation CD, run Disk Utility, and select Repair Disk. There are many different ways to do this. Congratulate yourself on a hard task well done. If a restart cures the problem, and the problem doesn't reappear, your troubleshooting work is done.
Read the rest of the hint for more detail on each of these steps. MORE SERIOUS TROUBLESHOOTING11 Reapply the latest combo updater What should you do? Here's a list of 20 basic steps to try.Ġ3 Make sure you're not running out of free space on the System volumeĠ5 Create a new user account, and see if the problem persists thereĠ7 Disable Application Enhancer, if you're running itĠ8 Startup in SafeBoot mode, and see if the problem persists thereġ0 Unplug all USB, Firewire devices except Apple mouse Start up from an OS X startup volume when the Mac would otherwise start up from a non-OS X startup volume.Įject (⏏), F12, mouse button, or trackpad buttonĮject removable media, such as an optical disc.So your OS X Mac isn't working quite right. Reset NVRAM. Release the keys after you hear the startup sound again. Start up from OS X Recovery over the Internet. Start up from a NetBoot server using the default boot image. Start up from a compatible NetBoot server. Start up to either Apple Hardware Test or Apple Diagnostics over the Internet. Start up to either Apple Hardware Test or Apple Diagnostics, depending on which Mac you're using. Start up from a bootable CD, DVD, or USB thumb drive (such as OS X install media). The links below point to other support documents on Apple's website. I'm betting many of you don't know them all, either, so here they are. I was personally familiar with these and several others, but it turns out there are 15 total combinations, thanks to a KnowledgeBase article Apple posted. Command-S is for "single-user mode," which essentially means booting to the command line.
Shift key, for instance, starts your Mac in Safe mode, and C (or c) starts up from a bootable CD, DVD, or thumb drive. Your Mac and OS X have a variety of startup keys and key combinations you can use to affect how the device starts up.
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