#Apple macbook pro 2011 wont boot up mac#
If you can boot a Mac successfully in Safe Mode, you either try to boot the Mac again to see if the next try is successful – perhaps just clearing some caches was what the doctor ordered. Essentially, Safe Mode disables some macOS features, clears some caches, and prevents some third-party kernel extensions from loading, all of which reduce the amount of work the Mac has to perform to get to the login screen. Safe Mode is a way to troubleshoot some system problems that can keep your Mac from booting normally. This progress bar indicates that Safe Mode is running a directory and disk check on your Mac this is like running First Aid from the Disk Utility. Keep holding down the shift key until the boot progress indicator shows up. This is very easy to do: simply hold down the shift key on your keyboard as soon as you hear the Mac startup chime. One time-honored trick to recover from a white screen is to boot into Safe Mode. However, if you find yourself a victim, please let us know in the comments section below! Update: Ma– Because the White Screen of Death is a hardware/firmware issue, we are reasonably confident that it will not occur on M1 Macs under adverse startup conditions. In this article, we’ll describe some steps that you can take to recover from the dreaded white screen. There is no Apple logo on this display, nor will you see a progress bar showing where you are in the Mac boot process. You’ll know when you’ve been hit by this bug when you boot up your Mac and see a blank white display. Usually, this rare bug happens after updating macOS to a new version, but it can happen at any time. If this all fails, then you likely have a bad drive.This poor MacBook Air is experiencing the “white screen of death”įrom time to time, you may experience one of the more frustrating Mac glitches – a white screen during boot. You should now be able to perform these instructions: If the command does not return an error, then quit the Terminal. At the Terminal prompt enter: diskutil umount force /dev/disk0s2 and press Return. This is what you will see if you have only one internal disk. The results displayed in the Terminal will look something like this:Ģ: Apple_HFS Macintosh HD 999.2 GB disk0s2ģ: Apple_Boot Recovery HD 650.0 MB disk0s3.When the Terminal window appears enter: diskutil list and press Return.From the Utilities menu in the top menubar select Terminal.Click on the Apply button, then wait for the Done button to activate and click on it.Īre you booting from the Recovery HD? If you are then do this:.
#Apple macbook pro 2011 wont boot up mac os#
Set the Format type to Mac OS Extended (Journaled.).Click on the Erase icon in Disk Utility's main window.When Disk Utility loads select the volume (indented entry, usually Macintosh HD) from the Device list.Select Disk Utility from the Utility Menu and click on Continue button.Immediately after the chime hold down the Command and R keys until the Apple logo appears. Install Yosemite or El Capitan from Scratch If you are unable to succeed with the above, then you will need to do an erase and install: Select Reinstall OS X and click on the Continue button.Īlso, see this User Tip: Basic Steps for Upgrading OS X.Quit Disk Utility and return to the Utility Menu.Wait until the Done button activates, then click on it. Click on the First Aid icon in the toolbar.Select the indented (usually, Macintosh HD) volume entry from the the side list.Select Disk Utility and click on the Continue button.Immediately after the chime hold down the Command and R keys until the Utility Menu appears. Reinstall El Capitan Without Erasing Drive What is the error message? You may want to try the following starting with the first set of instructions.