HT204308: Find the serial number of your Apple product

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bearitallpete
Level 1 (4 points)
iPhone

Q: can't boot up mac after el captain

can't start mac after update

Posted on Jun 25, 2016 11:49 AM

by Carolyn Samit,Solvedanswer
Carolyn Samit Carolyn Samit
Level 10 (120,630 points)
Apple Watch
A:

A Safe Mode boot deletes system caches that can help after an OS X update or upgrade.

 

Follow these steps to start up into safe mode.

  1. Start or restart your Mac.
  2. Immediately after you hear the startup sound, press and hold the Shift key.
  3. Release the Shift key when you see the Apple logo appear on the screen.

After the Apple logo appears, it might take longer than usual to reach the login screen or your desktop. This is because your Mac performs a directory check of your startup disk as part of safe mode.

To leave safe mode, restart your computer without pressing any keys during startup.

 

Try safe mode if your Mac doesn't finish starting up

Posted on Jun 25, 2016 11:51 AM

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bearitallpete

Q: can't boot up mac after el captain

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  • Helpful answers

  • by Carolyn Samit,Solvedanswer

    Carolyn Samit Carolyn Samit Jun 25, 2016 11:51 AM in response to bearitallpete
    Level 10 (120,630 points)
    Apple Watch
    Jun 25, 2016 11:51 AM in response to bearitallpete

    A Safe Mode boot deletes system caches that can help after an OS X update or upgrade.

     

    Follow these steps to start up into safe mode.

    1. Start or restart your Mac.
    2. Immediately after you hear the startup sound, press and hold the Shift key.
    3. Release the Shift key when you see the Apple logo appear on the screen.

    After the Apple logo appears, it might take longer than usual to reach the login screen or your desktop. This is because your Mac performs a directory check of your startup disk as part of safe mode.

    To leave safe mode, restart your computer without pressing any keys during startup.

     

    Try safe mode if your Mac doesn't finish starting up