files for macOS. Instead, they offer installers via the App Store or as (Disk Image) files. Official Downloads : You can often find older versions like Sierra through the Apple Support website Virtual Machines
Once the "Install macOS Sierra" app is in your Applications folder, use these Terminal commands on a Mac to create a bootable ISO image: Create a blank disk image: hdiutil create -o /tmp/Sierra.cdr -size m -layout SPUD -fs HFS+J Use code with caution. Copied to clipboard Mount the blank image: macos-sierra-10.12.6-french.iso
Real Macs from 2019 onwards (T2 chip) cannot boot Sierra. This ISO is only for 2009–2017 Macs (MacBookPro10,x / iMac14,x). For newer Macs, use a virtual machine. files for macOS