macOS Mojave

Failed to create bootable Catalina USB in Mojave Question marked as solved ★ Latest reply  by  CMAMD Technical Support Latest update on the question 2 replies 334 views asked by  Nee Kun User profile for user: pernerdia pernerdia User level: Level 1 How do I download the United, Delta and Southwest app on my MacBook?

Based on https://support.apple.com/en-us/HT201372 I tried twice but both also failed at 100% with the following error:

sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia –volume /Volumes/Catalina 

Password:

Ready to start.

To continue we need to erase the volume at /Volumes/Catalina.

If you wish to continue type (Y) then press return: y

Erasing disk: 0%… 10%… 20%… 30%… 100%

Copying to disk: 0%… 10%… 20%… 30%… 40%… 50%… 60%… 70%… 80%… 90%…

Error: Error Domain=NSCocoaErrorDomain Code=512 "“InstallESD.dmg” couldn’t be copied to “SharedSupport”." UserInfo={NSSourceFilePathErrorKey=/Applications/Install macOS Catalina.app/Contents/SharedSupport/InstallESD.dmg, NSUserStringVariant=(

    Copy

), NSDestinationFilePath=/Volumes/Install macOS Catalina/Install macOS Catalina.app/Contents/SharedSupport/InstallESD.dmg, NSFilePath=/Applications/Install macOS Catalina.app/Contents/SharedSupport/InstallESD.dmg, NSUnderlyingError=0x7fa9a35bddc0 {Error Domain=NSPOSIXErrorDomain Code=34 "Result too large"}}The copy of the installer app failed

What went wrong ?

For the past, I've been using https://diskmakerx.com to create bootable USB without any issue. This time around, DiskMakerX still have not release support for Catalina, thus I have to make use of command line.

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