# Catalina sudo /Applications/Install \ macOS \ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume # Big Sur sudo /Applications/Install \ macOS \ Big \ Sur.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume Note that the command is made for USB's formatted with the name MyVolume: Next run the createinstallmedia command provided by Apple (opens new window).
![download mac os x sierra installer dmg download mac os x sierra installer dmg](https://g6k7x4j6.stackpathcdn.com/wp-content/uploads/2017/12/Select-and-Open-DMG.jpg)
DOWNLOAD MAC OS X SIERRA INSTALLER DMG DOWNLOAD
This method allows you to download much older versions of OS X, currently supporting all Intel versions of OS X(10.4 to current) If you want to check the integrity of your download, you can check this repository of checksums (opens new window), although do note that these are crowdsourced checksums and may not be a reliable way to check for authenticity.
DOWNLOAD MAC OS X SIERRA INSTALLER DMG INSTALL
![download mac os x sierra installer dmg download mac os x sierra installer dmg](https://i1.wp.com/mrmacintosh.com/wp-content/uploads/2021/06/How-to-download-macos-2.png)
![download mac os x sierra installer dmg download mac os x sierra installer dmg](http://oceanofdmg.com/wp-content/uploads/2018/09/MacOS-High-Sierra-v10.13.6-Latest-Version-Download-OceanofDMG.com_.jpg)