Can I Delete Install macOS Sierra?
Contents It Is Safe to Delete, You Will Just Be Unable to Install macOS Sierra Until You Re-Download the Installer from the Mac Appstore. Nothing at All Except...
It is safe to delete, you will just be unable to install macOS Sierra until you re-download the installer from the Mac AppStore. Nothing at all except you would have to download it again if you ever need it. After install, the file would usually be deleted anyway, unless you move it to another location.
Can I delete install macOS Sierra from applications?
Nope. All it’s doing is occupying space. The system does not require it. You can delete it, just keep in mind that if you ever want to install Sierra again, you will need to download it again.
Can I delete macOS installer?
If you only want to delete the installer, you can select it from the Trash, then right-click the icon to reveal the Delete Immediately… option for just that file. Alternatively, your Mac can delete the macOS installer on its own if it determines that your hard drive doesn’t have enough free space.