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primary boot disk somehow was restored as the OS X Base System

I have been doing a restore of my MacBook Pro and it was successful. I then decided to upgrade from Yosemite to Sierra and have had issues with that. Now when I restart my computer is goes straight to macOS utilities and from there I am unable to reinstall Sierra as it is saying my disk is locked. Does anyone know how to fix this? I really want to get back on my computer and work.

Update (12/04/2017)

It is High Sierra

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Here's a listing of the series your system is part of: MacBookPro1,1

Are you sure this is your system?

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Is it regular Sierra, or HighSierra?

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If you review the MacOS section you see this comment: "This system can run the last version of Mac OS X 10.6.8 "Snow Leopard". However, it cannot boot in 64-bit mode"

So you'll need to back off to Snow Leopard and call it a day.

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@danj, re-read OPs first post. She had Yosemite running, then she tried upgrading to High Sierra. The issue looks like her Macbook Pro keeps booting to the recovery partition, not the OS partition.

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@avanteguarde - Re-read my comment in the OP's Q "Are you sure this is your system?"

Yosemite is not supported in this series, The OS used in the recovery partition is different than the full OS so that doesn't surprise me.

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No @danj

Yosemite was working properly. It was the upgrade to Sierra that broke it. Core 2 Duo is a 32-bit processor. Yosemite would not have installed without a brute force hack.

It could be OP selected the wrong device from the device selector when creating this question.

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@avanteguarde - Yosemite is strictly 64bit (has no thunking logic to cheat) Besides this older systems RAM would not be enough to run anything useful.

I do think the model info is wrong which is why I asked.

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Do you haapen to have a copy of MacOS High Sierra on an usb drive? You could try to put the image on the Mac from the drive

Update (12/05/2017)

I would recommend you trying that option, the way I would recommend you doing it is to wipe the drive inside the disk utility option in the window that pops up for you, then restart your Mac. when you restart your Mac if you see a folder with a question mark in it, then you are all set and golden. you should be able to plug in your USB bootable stick inside your Mac and it should instantly start booting up, it will prompt you to install instead of update.

If you have another Mac that you could steal the image off of, you can download MacOs High Sierra from the Mac store and when the launcher is inside the applications folder, then insert your USB to make it a bootable, go into your disk utility under launchpad and rename the thumb drive to "untitled12" then open up the terminal application and run this command:

sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled12 --applicationpath /Applications/Install\ macOS\ High\ Sierra.app

you will be prompt to ender your password, and then the terminal prompt will make your USB stick bootable to get your Mac up and running in no time!

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That was my next option to try doing that. I will try this today. Thank you

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Melissa Paterson さん、ありがとうございました!
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