Mac Os X El Capitan 10.11 6 Iso Download 720p May 2026
Yes. El Capitan’s overscan compensation (System Preferences > Displays > Underscan) works perfectly for older 720p TVs.
If you legally obtained the Install OS X El Capitan.app, follow these steps to create a bootable ISO that will work in any VM or on a USB drive.
Step 1: Prepare the Installer App
Place Install OS X El Capitan.app in your /Applications folder.
Step 2: Open Terminal and Create a Blank DMG
hdiutil create -o /tmp/ElCapitan -size 7300m -volname ElCapitan -layout SPUD -fs JHFS+
Step 3: Mount the Blank DMG
hdiutil attach /tmp/ElCapitan.dmg -noverify -mountpoint /Volumes/ElCapitan
Step 4: Write the Installer to the DMG
sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/ElCapitan --nointeraction
Step 5: Convert DMG to ISO (Final ISO file)
hdiutil convert /tmp/ElCapitan.dmg -format UDTO -o ~/Desktop/ElCapitan_10.11.6.iso
This creates ElCapitan_10.11.6.iso.cdr on your Desktop. Rename it to ElCapitan_10.11.6.iso.
Result: A clean, genuine ISO of 10.11.6, approximately 6.8 GB. This ISO runs at any resolution (including 720p).
Common issues include: