hdiutil attach /tmp/ElCapitan.cdr.dmg -noverify -mountpoint /Volumes/install_build Use code with caution.
Are you intending to install this on a or an emulator/virtual machine ?
: Open Windows Command Prompt as an Administrator and run the following commands one by one (replace "Your VM Name" with your exact VirtualBox machine name): macosxelcapitan10111imageiso work
Use the built-in createinstallmedia tool located inside the El Capitan application package to populate the mounted volume. You will need to enter your Mac's administrator password.
Before working with an ISO file, you must start with a legitimate copy of the installer, which you can get directly from Apple: hdiutil attach /tmp/ElCapitan
Open Terminal ( Applications > Utilities > Terminal ) and execute the following commands line-by-line to build the ISO:
sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app You will need to enter your Mac's administrator password
Fixing the macOS El Capitan 10.11.1 ISO: How to Make It Work
# 1. Create a blank local temporary disk image container hdiutil create -o /tmp/ElCapitan.cdr -size 7300m -layout SPUD -fs HFS+J # 2. Mount the newly created blank container to your filesystem hdiutil attach /tmp/ElCapitan.cdr.dmg -noverify -mountpoint /Volumes/install_build # 3. Use Apple's built-in creation tool to write the system binaries to the container sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/install_build --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --nointeraction # 4. Unmount the newly built system volume safely hdiutil detach /Volumes/Install\ OS\ X\ El\ Capitan # 5. Convert the resulting hybrid DMG structure into a standardized ISO format hdiutil convert /tmp/ElCapitan.cdr.dmg -format UDTO -o /tmp/ElCapitan.iso # 6. Move the finalized bootable ISO onto your desktop mv /tmp/ElCapitan.iso.cdr ~/Desktop/ElCapitan.iso Use code with caution.
VirtualBox requires manual command-line configuration to mimic Apple hardware, otherwise, it will trigger a "Guru Meditation" critical error.