I have two apple product imac and macbook. My imac using high siara and macbook using venture. My imac is restore and i am trying to reinstated high siara but it doesn't work so i am creating bootable installer but macbook show this version of macos 10.13.6 can't be installed on this computer
[Re-Titled by Moderator]
iMac 21.5″, macOS 10.13
You don't run the installer. Here are the instructions:
Create a bootable installer for macOS - Apple Support
Sorry but a follow on
To perform this action will require booting from a Bootable Installer.
The Bootable Installer can Only be performed on an Apple Computer
This will have to be performed from a Qualifying Computer to run the version of macOS to be made on the Bootable Installer.
Example : Bootable Installer of High Sierra would have to be done on a computer that Qualifies to run High Sierra
Notation: If the computer being used to perform this action is Too New or Too Old to qualify to run the version of macOS - this computer can not be used.
Alternative is, to gain access to a Qualifying Apple Computer from a family member, friend or associate.
Sorry, your Image above is Not High Sierra macOS 10.13 but Sierra OS 10.12
The Sierra Installer from Apple does come in a DMG file which you appear to have extracted
But unfortunately Apple Has Not kept the OS X Sierra up to date.
There is a Flaw in this DMG that Apple has known about for some time and have done nothing about it
If you really what macOS 10.13 High Sierra, suggest follow the advise from @Barney-15E and download the correct version of macOS and following the instructions provided
How to create a bootable Installer for macOS High Sierra?
