Installing OS Sierra


soundman

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I have now been at it for 2 days & cant get Sierra to install on Mac Mini mid 2010 , although Apple states that is will run. I keep on getting various error messages. I have tried downloading os installer form Apple website , from other websites , and still no luck. It keeps on telling me things like :Cannot be installed on this computer / or it stops 2 minutes from finishing installation / an error message that suggests that the clock is wrong , which it isn't & a whole host of other errors I cant even remember while trying different options. I'v tried direct installation , installing from boot usb , nothing seems to work. I'm trying to install sierra on another partition as I need to keep os 10.10.5 running as well. Can anybody assist me please!!! Thanx!!!!
 
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Cory Cooper

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Hello and welcome.

-I assume you downloaded the Sierra installer from the App Store, not the Apple website? The only official installer is from the App Store.
-How much free space is available on the partiton you are installing Sierra on?
-Do you have original Apple RAM, or have you upgraded with third-party RAM?
-Do you have any third-party utilities like MacKeeper or antivirus installed and running?

C
 

soundman

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Hello and welcome.

-I assume you downloaded the Sierra installer from the App Store, not the Apple website? The only official installer is from the App Store.
-How much free space is available on the partiton you are installing Sierra on?
-Do you have original Apple RAM, or have you upgraded with third-party RAM?
-Do you have any third-party utilities like MacKeeper or antivirus installed and running?

C
Hello Cory, thanx for responding! I did download from app store / 120gig partition / used third party ram for upgrade.

G
 

Cory Cooper

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OK, thanks.

I have seen issues with OS X/macOS installations and upgrades with some third-party RAM. Do you happen to have the original Apple RAM you could reinstall and try the installation with?

C
 

soundman

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OK, thanks.

I have seen issues with OS X/macOS installations and upgrades with some third-party RAM. Do you happen to have the original Apple RAM you could reinstall and try the installation with?

C
Thanx Cory, I completely forgot about that issue. Must have it somewhere. Much appreciated!! I’ll reconnect if I encounter further issues.
 
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soundman

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Hi Cory, thanx for helping me with the sierra issue. Problem solved!
 
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Peter Aretin

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Hi Cory, thanx for helping me with the sierra issue. Problem solved!
Pardon me for asking, but why not upgrade to High Sierra 10.13.6? After cautiously installing and testing on a clone partition, I find it works great on my mid 2010 mini. It didn't seem to break any apps that were working in Mavericks.
 

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