macOS Sierra problems

[yo i like pugs]

so am I trying to install macOS Sierra on my a1286 MacBook Pro useing a usb installer but it keeps telling me “an error occurred while preparing installation. Try running the application again” and when I check the installer logs it says “error 110 couldn’t mount base system dmg” “failed to mount outer dmg” I don’t know what to do could someone help me

[Crunchy Dragon]

If that's an A1286 Core 2-based 2008 MacBook Pro, you can't run Sierra on it.

 

Highest macOS version you can run is OSX 10.11.6 El Capitan.

[yo i like pugs]

16 minutes ago, Crunchy Dragon said:

If that's an A1286 Core 2-based 2008 MacBook Pro, you can't run Sierra on it.

 

Highest macOS version you can run is OSX 10.11.6 El Capitan.

No it’s a core i5 macbook pro

[8740359o]

Use Opencore 

[Crunchy Dragon]

2 hours ago, yo i like pugs said:

No it’s a core i5 macbook pro

Is it a 2008 model?

[yo i like pugs]

20 minutes ago, Crunchy Dragon said:

Is it a 2008 model?

no

[Crunchy Dragon]

4 hours ago, yo i like pugs said:

no

How did you create your installer?

[yo i like pugs]

1 minute ago, Crunchy Dragon said:

How did you create your installer?

i said that in the original post i used a usb flash drive

 

[Crunchy Dragon]

45 minutes ago, yo i like pugs said:

i said that in the original post i used a usb flash drive

Did you use Apple's guide to create the installer on the USB flash drive?
https://support.apple.com/en-us/HT201372

[yo i like pugs]

26 minutes ago, Crunchy Dragon said:

Did you use Apple's guide to create the installer on the USB flash drive?
https://support.apple.com/en-us/HT201372

no let me try that i used transmac

[yo i like pugs]

1 hour ago, Crunchy Dragon said:

Did you use Apple's guide to create the installer on the USB flash drive?
https://support.apple.com/en-us/HT201372

yea that did not work

[Crunchy Dragon]

20 minutes ago, yo i like pugs said:

yea that did not work

Are you still getting the same errors as in your original post?

 

What is your exact model MacBook Pro?

[yo i like pugs]

1 minute ago, Crunchy Dragon said:

Are you still getting the same errors as in your original post?

 

What is your exact model MacBook Pro?

mid 2010 macbook pro

[Crunchy Dragon]

12 hours ago, yo i like pugs said:

mid 2010 macbook pro

What version of macOS does it have installed now?

 

Have you tried installing an older version of macOS(such as 10.10 or 10.11), and then manually updating it to Sierra or High Sierra from inside macOS?

[yo i like pugs]

6 hours ago, Crunchy Dragon said:

What version of macOS does it have installed now?

 

Have you tried installing an older version of macOS(such as 10.10 or 10.11), and then manually updating it to Sierra or High Sierra from inside macOS?

it  does not have any version of macos installed let me try that

[yo i like pugs]

On 9/4/2023 at 12:12 PM, Crunchy Dragon said:

What version of macOS does it have installed now?

 

Have you tried installing an older version of macOS(such as 10.10 or 10.11), and then manually updating it to Sierra or High Sierra from inside macOS?

that did not work ethier

[Crunchy Dragon]

26 minutes ago, yo i like pugs said:

that did not work ethier

Were you able to install a different version of macOS?

[yo i like pugs]

23 hours ago, Crunchy Dragon said:

Were you able to install a different version of macOS?

nope