Install macOS High Sierra on Mac Direct Download Sierra has been released. Check out how to get macOS High Sierra from outside the Mac App Store. This happens primarily because of the high volume of traffic hitting the Apple servers, which causes congestion in. Whatever your reasons, here is how to clean install macOS High Sierra. How to prepare your Mac for the clean install. Before you do anything, check that your Mac is able to run Apple's new operating system. To complete the clean install procedure described below, you'll need: macOS High Sierra Installer, available from the Mac App Store.
Have been following v useful instructions
![Mac os install disc download Mac os install disc download](/uploads/1/3/3/9/133913018/453803817.png)
and other apple sites Uninstalling apps on mac sierra.
Install Macos High Sierra.app Download
Have performed all steps successfully BUT
error message
Applications/Install macOS High Sierra.app does not appear to be a valid OS installer application.
Download Macos High Sierra Installer
appears repeatedly
Wanted a clean install from OSX Build 13F1911 (!!! it used to say 10.9.5)
Wanted clean install to clean up undetectable clutter and used storage. Can install update without clean install.
Have another Mac, newer, to update.
I also have another dead-battery MBP that I would like to revive (but HD dead, so, that may be nothing).
Can you help me fix the Utility commands? Is the OS to old to use disk utility for this function?
Download Mac Os Installer
With updated system maybe I won't have to use passwords for access 25% of all the time I spend on computer and Apple will recognise this client again How to open dmg files on ipad.
Please advise and many thanks in advance
MD
MacBook Pro (15-inch Mid 2012), OSX 10.9.5
Posted on
The most likely problem is that you downloaded the 19.7mb version of the installer from the app store. This means that you cannot install it onto removable media. This installer from the app store downloads the OS from the internet. If you want to make it work you need to follow the steps on this website (http://osxdaily.com/2017/09/27/download-complete-macos-high-sierra-installer/) this will download the full download version that is not installed through the internet. You will still use the same command from the apple page and it should now work (How to create a bootable installer for macOS - Apple Support) and this personally worked for me and i had this same problem.
Thanks, Tyler