Unlike older software (e.g., Snow Leopard), Apple does not publicly host a direct .dmg file for El Capitan. Instead, Apple distributes it as an ( InstallMacOSXElCapitan.app ), which is essentially a package containing the InstallESD.dmg (the actual system image). You can extract the DMG from that app.
Q: Can I upgrade to macOS High Sierra or later from El Capitan? A: Yes, you can upgrade to macOS High Sierra or later from El Capitan. download mac os el capitan dmg
A USB drive allows you to wipe your hard drive and install a fresh copy of El Capitan. You will need . Unlike older software (e
In the case of El Capitan, Apple’s official distribution method was a .dmg file that contained an application called InstallOSX.pkg (or directly the Install macOS El Capitan.app bundle). Q: Can I upgrade to macOS High Sierra
If a Mac's recovery partition is damaged, a bootable USB made from a DMG is a lifesaver.