If you want to clean install High Sierra on a real Mac from the ISO:
You need to edit the .vmx file manually. Add this line:
smc.version = "0" macos high sierra 10.13 6 iso download
This is normal when installing High Sierra on HDDs. Wait up to 2 hours. The transition from HFS+ to APFS slows the process. If you want to clean install High Sierra
hdiutil attach /tmp/HighSierra.dmg -noverify -mountpoint /Volumes/install_build macos high sierra 10.13 6 iso download
No. Apple does not distribute macOS as an ISO file directly. Apple distributes the installer as a .app bundle (inside a .dmg file) via the App Store. An ISO is a disk image format typically used for optical discs (CD/DVD/Blu-ray) or virtual machine hypervisors.