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I'm trying to do a clean install of macOS Mojave on my 2012 13" MacBook Pro using a bootable USB. I'm doing it on a new 1 TB SSD that I've installed after my last one died.

The problem I'm having is that ever time I run the installer, everything looks like it's working, but then towards the end of the installation, the computer restarts and ultimately returns to the macOS Utilities menu.

I've tried formatting the hard drive several times and have even tried installing OS X Mountain Lion via an Internet recovery.

I'm struggling to find a solution to this, so would really appreciate some help.

  • Welcome to Ask Different :) Can you elaborate on what happens when to attempt to install OS X Mountain Lion via Internet recovery? Does it work? How fast and reliable is your Internet connection? – Nimesh Neema Jan 20 at 21:40
  • Hi Nimesh :) When I tried to do Mountain Lion, it eventually restarted to a white screen with a flashing folder and question mark icon. My internet connection is generally pretty fast and reliable. – macleod92 Jan 20 at 21:42
  • The most likely explanation is that your Mac is unable to locate the startup disk (support.apple.com/kb/HT204156). It's advisable to check the connection of your hard drive. Make sure that the hard drive is in perfectly working condition and your Mac is able to detect it. – Nimesh Neema Jan 20 at 21:45
  • Thanks for the advice. If the disk is showing up alright in Disk Utilities does that mean that it's being detected? – macleod92 Jan 20 at 21:47
  • Yes. If it's shown with the right capacity in Disk Utilities, it's detected fine. – Nimesh Neema Jan 20 at 21:51
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For the benefit of anyone having this issue in the future. The problem was the hard drive cable. I've replaced it and now everything is working properly.

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