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Level 1

137 points

how to get rid of the recovery partition?

hello, i'm trying to downgrade my macbook pro mid 2012 from high sierra back to os x mountain lion which was the os it shipped with. i erased my drive and went into internet recovery, but for some reason it's always showing the recovery for catalina. also, for some reason, the os x recovery drive for high sierra is shown as the only bootable drive and i don't know how to get rid of it. i think it's barring me from reverting back to the factory version. please help me! thank you

Posted on Dec 19, 2020 2:18 AM

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HWTech

Level 9

62,588 points

Posted on Dec 19, 2020 1:24 PM

To access the online Mountain Lion installer you need to boot into Internet Recovery Mode using Command + Option + Shift + R.

While booted to the installer you will need to partition the whole physical drive as GUID partition and MacOS Extended (Journaled) using these instructions:

https://www.owcdigital.com/assets/support/support-formatting-and-migration/Mac_Formatting_6-10.pdf

If your laptop is able to boot normally or into Safe Mode or you have another compatible Mac, then you can create a bootable macOS USB installer for macOS 10.11 to 10.15 using the instructions in this Apple article:

https://support.apple.com/en-us/HT201372

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how to get rid of the recovery partition?

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