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13" aluminum unibody, 2.0 or 2.4 GHz Core 2 Duo processor.

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About this Mac shows "Unarchived"

Hey there. Today, I noticed a strange problem with my Mac. If you go to  > About This Mac, it used to show information about my Mac. Now, where it used to say "OS X El Captan," it says "Unarchived." What does that mean? And how do I fix that?

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Just a weird bug in some newer versions of OS X. Have had El Capitan and Yosemite both do this. Not really sure if there is a fix except a complete reinstall. Have you verified that it is updated as far as it can go?

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According to Apple, The MacBook (Late 2008, Aluminum) can support Mac OS X Snow Leopard (10.6) to OS X El Capitan (10.11). I have tried running macOS Sierra (10.12), but I get the prohibitory sign.

What's strange is that I have been using OS X El Capitan for years, and this has never happened to me. If reinstalling OS X does the trick, then I will try that.

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@jadonlyon Running later versions of the OS require the use of third party patchers like Dosdude1 and Opencore Legacy Patcher. Both work great though for a machine like this I would recommend Dosdude1 Mojave or Catalina patchers due to these systems having some graphical glitches in newer versions.

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@thequacker - I have tried using macOS Sierra, High Sierra, and Mojave using Dodude1's patcher, and I have run macOS Catalina, and Monterey using OpenCore. While they do run fine, I have always had some sort of issue with it, because the patchers are not fully efficient. So, I switched back to El Capitan because it works fine on my MacBook without the support of any third party software. I would prefer to keep this Mac untouched and let all of the drivers be by Apple alone. I understand what you are saying, but I have a MacBook Pro with the M2 processor that is running macOS Sonoma, so I don't need this Mac to run the newer versions of macOS.

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@thequacker - As a side note, I saw the edits you made on my OpenCore guide. Thank you so much for helping me out with that. Unfortunately I don't have a lot of time to perfect those guides, and I haven't finished making all of them. So I am very grateful to have someone help me out.

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@jadonlyon No problem. Glad to help.

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