If you're looking for a DMG file for OS X El Capitan 10.11, you can try searching for it on Apple's website or other reputable sources. However, please be aware that downloading and installing software from untrusted sources can pose a security risk to your Mac.
Would you like the official Apple download link for El Capitan, or instructions on how to create a clean DMG from the official installer? os x el capitan 10.11 download dmg
Note: This does not install El Capitan yet. It extracts the actual installer application to your Applications folder. If you're looking for a DMG file for OS X El Capitan 10
Connect your USB drive. Open Disk Utility , select the drive, and erase it using Mac OS Extended (Journaled) formatting, naming it "ElCapInstaller". select the drive