In the event that your Mac is possibly showing the blue screen when you start up, or you can sign in however the work area neglects to show up, you may have an issue with your startup drive. The typical strategy is to run Disk Utility to endeavor to fix the startup drive, yet you can’t do that if your Mac doesn’t begin, isn’t that so? Indeed, this is what you can do.
At the point when a Mac neglects to fire up ordinarily, one of the normal investigating rehearses is to confirm and fix the startup drive. A startup drive that is encountering issues is probably going to keep your Mac from beginning, so you may wind up in an impasse. You have to run Disk Utility’s First Aid devices, yet you can’t get the chance to Disk Utility in light of the fact that your Mac won’t begin. Must visit norton.com/setup for information of antivirus.
There are three techniques for getting around this issue.
Booting from an alternate gadget. This can be another drive that has a bootable framework on it, or your OS X Install DVD, which additionally contains the Disk Utility devices, or the Recovery HD which is an extraordinary segment on your startup drive that has been available since OS X Lion and later.
Experimental Mode. This is an exceptional booting technique that powers your Mac to play out a programmed circle check and fix as it attempts to fire up.
Single User Mode (fsck). This is another uncommon startup strategy that enables you to run direction line utilities, for example, fsck, which can confirm and fix hard drives.
Boot From Alternate Device
The most straightforward arrangement by a wide margin is to boot from an alternate gadget. The three most mainstream alternatives are another bootable startup drive, a crisis startup gadget, for example, a bootable USB streak gadget, or a present OS X Install DVD.
To boot from another hard drive or a USB streak gadget, hold down the choice key and start up your Mac. The Mac OS startup director will show up, enabling you to choose the gadget to boot from.
To boot from your OS X Install DVD, embed the DVD into your Mac, and after that restart your Mac while holding down the letter ‘c’ key.
To boot from the Recovery HD, restart your Mac while holding down the direction (cloverleaf) and R keys (order + R).
When your Mac completes the process of booting, use Disk Utility’s First Aid highlight to check and fix your hard drive.
Boot Using Safe Mode
To fire up in Safe Mode, hold down the move key and afterward begin your Mac. Protected Mode takes some time, so don’t be frightened when you don’t see the work area immediately. While you’re pausing, the working framework is confirming the registry structure of your startup volume, and fixing it, if fundamental. It will likewise erase a portion of the startup reserves that may likewise be keeping your Mac from beginning effectively.
When the work area shows up, you can access and run Disk Utility’s First Aid apparatus similarly as you typically would. At the point when First Aid is done, restart your Mac typically.
If it’s not too much trouble note that not all applications and OS X highlights will work when you boot into Safe Mode. You should utilize this startup mode just for investigating and not for running everyday applications.
Boot Into Single User Mode
Start up your Mac and quickly hold down the direction key in addition to the letter ‘s’ key (order + s). Your Mac will start up in an exceptional situation that resembles an out-dated order line interface (since that is actually what it is).
At the order line brief, type the accompanying:
/sbin/fsck – fy
Press return or enter after you type the above line. Fsck will begin and show status messages about your startup plate. When it at long last completes (this can take some time), you will see one of two messages. The first demonstrates that no issues were found.
** The volume xxxx has all the earmarks of being OK.
The second message demonstrates that issues were experienced and fsck endeavored to address the blunders on your hard drive.
***** FILE SYSTEM WAS MODIFIED *****
In the event that you see the second message, you should rehash the fsck order. Keep on rehashing the order until you see the “volume xxx gives off an impression of being OK” message.
On the off chance that you don’t see the volume OK message after at least five endeavors, your hard drive has major issues that it will be unable to recoup from.