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macOS High Sierra 10.13.6 full installer

I erased my hard drive on my Mid 2010 (iMac11,3). Is there a link to download the macOS High Sierra 10.13.6 ? Not an upgrade, but rather the entire OS. Thanks

iMac 27″, macOS 10.12

Posted on Aug 18, 2020 7:52 AM

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Posted on Aug 18, 2020 8:26 AM

Check here under #4.

15 replies

Aug 19, 2020 1:40 AM in response to mike!

Mike you are trying to download High Sierra to your MacBook Pro, did this MacBook Pro come preinstalled with Mojave or Catalina. The reason I ask is that any mac that came preinstalled with a newer OS than High Sierra will not be allowed to download High Sierra or any older OS. Apple does not take into consideration that you want to download the installer and then install it on another older compatible mac.


If that is not the case then I probably do the same a you.

I am doing this on a mac with macOS Mojave 10.14.6 installed.

(My mac is/ was capable of running High Sierra)

Open Safari and click on this link,

How to upgrade to macOS High Sierra - Apple Support

Go to Section 4 and click on Get macOS High Sierra

this will redirect you to the App Store High Sierra page

It should say 'Get' or 'Download'

When I click on Download the Software Updates window opens

and after a couple of minutes I see this,


Then I click on Download and see this,


"Downloading new updates..." is a bit misleading it is in fact downloading Install macOS High Sierra.app

to the Applications folder.



From your earlier screenshot of the Software Update panel you have checked the box Automatically keep my mac up to date.

I am not entirely sure it will make a difference but uncheck that box.

Restart your mac and try downloading High Sierra again.

Aug 18, 2020 9:50 AM in response to mike!

I believe you need to be on a version of OS that is equal to or less than the OS you're trying to download which is why it worked for me and not you.


If you have another Mac that has High Sierra or less, you could try that one. Or you could reboot your iMac into Internet Recovery using Shift+Option+Command+R and install the OS that was shipped with your iMac to an external USB drive. Then boot to the external and download High Sierra.

Aug 18, 2020 12:37 PM in response to mike!

When you go to the App Store High Sierra download page, it should say Get or Download.

If the App Store says ‘Open’ then it is detecting a previous download of the install app

go to the Applications folder locate Install macOS High Sierra.app.

Move it to the Trash, empty the Trash.

Restart, click on the link again, the App Store should say ‘Get' or 'Download'.

Aug 18, 2020 12:46 PM in response to keg55

keg55 wrote:

I believe, as I mentioned previously, you're trying to downgrade your current OS instead of upgrading it.

Actually the user is trying to download the High Sierra installer which should work.

And FWIW…

"I believe you need to be on a version of OS that is equal to or less than the OS you're trying to download which is why it worked for me and not you."

Is incorrect. I can download it from Catalina.

Aug 20, 2020 6:59 AM in response to dialabrain

Thank you all for your information.

I was able to download the macOS High Sierra 10.13.6 full installer version thanks to a mid 2012 macbook pro with macOS El Capitan installed.

All other attempts with the latest mac book pro and already installed versions of the operating system (Catalina or Mojave) have been unsuccessful.


Then I created an installer via usb stick, and tried to install the operating system on my iMac Mid 2010 (iMac11,3). Unfortunately, none of the various attempts were successful. At each attempt, this message appeared: cannot complete the installation due to a problem. Please restart and try again.


This is probably due to a problem on the internal hard drive, the original 1TB HDD. So I installed High Sierra 10.13.6 on an external hard drive (USB) to test my guess (HDD corrupt)... and I was able to reboot my iMac mid 2010 (with very long USB loading times).


I think it is therefore necessary to replace the internal HDD with a 128 or 256 GB SSD. Do you have any suggestions on which SSD to buy for my iMac mid 2010 and if I need to buy also an adapter for the new SSD as well?

macOS High Sierra 10.13.6 full installer

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