You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

User profile for user: ezrickd
ezrickd Author
User level: Level 1
4 points

Mac BookPro 2012 fail to boot from USB

USBHi need help.

i have my Mac restart in a loop, i have decided to install a 900G SSD disk on it to see it will help.


I have formated & created USB Boot Disk from my other same MacBook running High Sierra.


I am booting the probelmatic MAC I point it to boot from the USB Boot , It Display the Apple Logo and the advancement bar, while USB Disk led is blinking, but when all is done... I have a blank screen.. nothing works... can stay like that for hours..


any Idea ?

should I format the SSD disk first on my other MAC .. could it be other HW malfunction that is the isssue.


appriciate Ideas for Troubleshoot.


/Ezrickd.

Posted on Aug 22, 2020 3:07 PM

Reply
Question marked as Top-ranking reply
User profile for user: Kappy
Kappy
User level: Level 10
361,855 points

Posted on Aug 22, 2020 8:37 PM

I think you should try the proper. approach.


Internet/Network Recovery of El Capitan or Later on a Clean Disk


     If possible, back up your files before proceeding.


You will need a fast, working Internet connection, preferably, Ethernet. If you must use Wi-Fi, you will be asked to select your network and enter the network password. This procedure will install the original version of macOS that came pre-installed from the factory.


  1. Restart the computer. Immediately, at or before the chime, hold down the (Command-Option-Shift-R) keys until a globe appears.
  2. The Utility Menu will appear in from 5-20 minutes. Be patient.
  3. Select Disk Utility and click on the Continue button.
  4. When Disk Utility loads select the target drive (out-dented entry w/type and size) from the side list.
  5. Click on the Erase button in Disk Utility's toolbar. A panel will drop down.
  6. Set the partition scheme to GUID.
  7. Set the Format type to APFS (SSDs, only if installing Mojave or Catalina ) or Mac OS Extended, (Journaled.)
  8. Provide a volume name, usually "Macintosh HD."
  9. Click on the Apply button, then click on the Done button when it activates.
  10. Quit Disk Utility and return to the Utility Menu.
  11. Select Install OS X and click on the Continue button.


If this works, then upgrade the result to Catalina: How to upgrade to macOS Catalina.


View in context

Similar questions

1 reply
Question marked as Top-ranking reply
User profile for user: Kappy
Kappy
User level: Level 10
361,855 points

Aug 22, 2020 8:37 PM in response to ezrickd

I think you should try the proper. approach.


Internet/Network Recovery of El Capitan or Later on a Clean Disk


     If possible, back up your files before proceeding.


You will need a fast, working Internet connection, preferably, Ethernet. If you must use Wi-Fi, you will be asked to select your network and enter the network password. This procedure will install the original version of macOS that came pre-installed from the factory.


  1. Restart the computer. Immediately, at or before the chime, hold down the (Command-Option-Shift-R) keys until a globe appears.
  2. The Utility Menu will appear in from 5-20 minutes. Be patient.
  3. Select Disk Utility and click on the Continue button.
  4. When Disk Utility loads select the target drive (out-dented entry w/type and size) from the side list.
  5. Click on the Erase button in Disk Utility's toolbar. A panel will drop down.
  6. Set the partition scheme to GUID.
  7. Set the Format type to APFS (SSDs, only if installing Mojave or Catalina ) or Mac OS Extended, (Journaled.)
  8. Provide a volume name, usually "Macintosh HD."
  9. Click on the Apply button, then click on the Done button when it activates.
  10. Quit Disk Utility and return to the Utility Menu.
  11. Select Install OS X and click on the Continue button.


If this works, then upgrade the result to Catalina: How to upgrade to macOS Catalina.


Reply

Mac BookPro 2012 fail to boot from USB

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.
Learn more Sign up