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David Anderson
David Anderson
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If you can not install High Sierra by using the High Sierra installer application stored in the High Sierra Recovery partition or from booting to Internet Recovery, then the steps below could be used as an alternative.

The procedure installs OS X Mountain Lion, then uses OS X Mountain Lion to do a clean install of macOS High Sierra.

  1. Create a bootable USB Mountain Lion installer. The instructions are given in the section titled “How to Create a USB Flash Drive Mountain Lion Installer from OS X/macOS Recovery” of this answer.
  2. Follow this answer starting at step 2. Note: At step 6, substitute http://maclinks.publicvm.com for the link How to download macOS.

If you can not install High Sierra by using the High Sierra installer application stored in the High Sierra Recovery partition or from booting to Internet Recovery, then the steps below could be used as an alternative.

  1. Create a bootable USB Mountain Lion installer. The instructions are given in the section titled “How to Create a USB Flash Drive Mountain Lion Installer from OS X/macOS Recovery” of this answer.
  2. Follow this answer starting at step 2. Note: At step 6, substitute http://maclinks.publicvm.com for the link How to download macOS.

If you can not install High Sierra by using the High Sierra installer application stored in the High Sierra Recovery partition or from booting to Internet Recovery, then the steps below could be used as an alternative.

The procedure installs OS X Mountain Lion, then uses OS X Mountain Lion to do a clean install of macOS High Sierra.

  1. Create a bootable USB Mountain Lion installer. The instructions are given in the section titled “How to Create a USB Flash Drive Mountain Lion Installer from OS X/macOS Recovery” of this answer.
  2. Follow this answer starting at step 2. Note: At step 6, substitute http://maclinks.publicvm.com for the link How to download macOS.
added 147 characters in body
Source Link
David Anderson
David Anderson
  • 42k
  • 14
  • 67
  • 111

If you can not install High Sierra by using the High Sierra installer application stored in the High Sierra Recovery partition or from booting to Internet Recovery, then the steps below could be used as an alternative.

  1. Create a bootable USB Mountain Lion installer. The instructions are given in the section titled “How to Create a USB Flash Drive Mountain Lion Installer from OS X/macOS Recovery” of this answer.
  2. Follow this answer starting at step 2. Note: At step 6, substitute http://maclinks.publicvm.com for the link How to download macOS.

If you can not install High Sierra by using the High Sierra installer application stored in the High Sierra Recovery partition or from booting to Internet Recovery, then the steps below could be used as an alternative.

  1. Create a bootable USB Mountain Lion installer. The instructions are given in the section titled “How to Create a USB Flash Drive Mountain Lion Installer from OS X/macOS Recovery” of this answer.
  2. Follow this answer starting at step 2.

If you can not install High Sierra by using the High Sierra installer application stored in the High Sierra Recovery partition or from booting to Internet Recovery, then the steps below could be used as an alternative.

  1. Create a bootable USB Mountain Lion installer. The instructions are given in the section titled “How to Create a USB Flash Drive Mountain Lion Installer from OS X/macOS Recovery” of this answer.
  2. Follow this answer starting at step 2. Note: At step 6, substitute http://maclinks.publicvm.com for the link How to download macOS.
Source Link
David Anderson
David Anderson
  • 42k
  • 14
  • 67
  • 111

If you can not install High Sierra by using the High Sierra installer application stored in the High Sierra Recovery partition or from booting to Internet Recovery, then the steps below could be used as an alternative.

  1. Create a bootable USB Mountain Lion installer. The instructions are given in the section titled “How to Create a USB Flash Drive Mountain Lion Installer from OS X/macOS Recovery” of this answer.
  2. Follow this answer starting at step 2.