This diagnostic issues can potentially help you skip a few steps when calling support Need Mac Tech Support? Here Are Your Options "Tech support" — two words that strike fear into the hearts of all but the most competent computer users out there.
Option key - Wikipedia
Where do you begin to look when things start to go wrong? Read More as well. NVRAM handles volume, resolution, time zone settings, and startup disk. If you have problems with these preferences, use this option. Resetting the SMC can help with many hardware issues.
If your fans are running even when your Mac is idle is a good example. It also addresses issues with sleep, the ambient light sensor, and keyboard backlight. It allows you see the processes and steps hidden behind the gray Apple screen and progress bar. If you have FileVault encryption enabled, you have to hold the keys until the login screen comes up. If you have a firmware password, you need to disable it.
If you find that something is crashing your Mac during startup, you need to disable it. That is where Safe Mode comes in, accessed by holding Shift at boot. You can also use Terminal to restart in Safe Mode using the command:.
- Control Key Mapping.
- Navigation menu.
- Pressing Option key isn't working;
You cannot just restart your Mac to exit Safe Mode when you do it this way. You need to use the command:. When you use this mode, your Mac disables almost everything but the basic system needs.
- What to do when keyboard commands don’t work at startup on your Mac | Macworld.
- The Command Key.
- Option Key not working | Mac Support.
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It also forces a disk check, which may help fix some issues as well. Safe Mode does not fix most issues, but it does help you isolate a problem.
There are times when your Mac may misbehave and refuse to boot into OS X.
Image Credit: Brennan via Flickr. Single User Mode is going to be for people comfortable with the command line. This prompt lets you run fsck and other Terminal commands. If you have a problem narrowed down and are comfortable with the command line, use Single User Mode. It has the same restrictions as Verbose Mode for encryption and firmware passwords.
Windows Keyboard Equivalents for the Mac's Special Keys
If you want to copy data off of a Mac, Target Disk Mode is useful. Knowing how to use a PC keyboard with a Mac could help your business save money on the cost of a brand new Apple keyboard. The principal different between Mac and Windows keyboards is the addition of the "Command" key. The "Command" keys are located in between the "Alt" keys and the spacebar on the standard Mac keyboard, in similar locations to the "Windows" keys on Windows machines.
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The "Command" key is important because it, rather than the "Control" key, is generally the key used to trigger keyboard shortcuts on OS X computers. It might seem strange, but the likely cause of your "Control" key seemingly not working on a Mac is that it is actually acting as "Control," rather than a "Command" key. By default, the "Command" key is either mapped to the "Control" or "Windows" keys on a Microsoft keyboard. As such, you should be able to trigger keyboard shortcuts by substituting the "Windows" key for the "Control" key.
How to Use OS X Boot Options to Troubleshoot Your Mac
You can reinstate your "Control" key as the primary source of keyboard shortcuts using the Modifier Keys menu. Modifier keys are used in combination with the regular alpha-numeric keys to provide alternate functionality to keyboard shortcuts. But, did you know that opening a menu while pressing the Option key will reveal otherwise hidden, alternate commands? What if you have a number of open Finder windows and you want to close them all, simultaneously? Do you just go to the trouble of clicking the close bubble for each and every window?
Do you press Command-W for each window? Or, do you go to the File menu and select Close Window?
Instead, use Option key magic! Pop open the File menu, and look at all your choices listed there.
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Now, with the menu still open, press the Option key. Notice that several items in the list will change in some way - perhaps different wording, or perhaps the disappearance of normally present ellipses that directly follow certain menu items. Back to the example at hand. With the Option key pressed while the File menu is open, the item that is normally called Close Window now becomes Close All. What about that matter regarding the ellipsis …?