![]() Mv -v ~/Downloads/BigSur.cdr ~/Downloads/BigSur. Hdiutil convert /tmp/BigSur.dmg -format UDTO -o ~/Downloads/BigSur.cdr Sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia -volume /Volumes/BigSur -nointeractionĤa. sudo hdiutil detach /Volumes/Install\ macOS\ Big\ Sur/ -force macOS Intel, 10.14: Mojave or newer, 64 bitsmacOS Apple Silicon, 11: Big Sur or newer, 64 bits Release Notes. Sudo hdiutil attach /tmp/BigSur.dmg -noverify -mountpoint /Volumes/BigSurĤ: Used the disk image as destination for creating installer using Mac App Store download Sudo hdiutil create -o /tmp/BigSur -size 17600m -volname BigSur -layout SPUD -fs HFS+J So not sure what I'm doing wrong?ġ: First download macOS Big Sur installer from App Store or if elsewhere and put it in /Applications folder Please try downloading again' or something like that. Anyhow was able to load up the ISO installer however but when I selected the afps drive to install to got an error message on screen that said 'Installer damaged. Maybe I shouldn't have done a drag n drop inside a 'view package contents' finder window. ![]() Basically the createinstallmedia routine on step 4 would error out however did some research and found there was an installESD file at like 11GB hidden within one of the packages in the full download and creating a 'SharedSupport' folder inside the Install MacOS App and copying the ESD file into that folder allowed the steps below to work. So found this app I think it was called Susinspector and that one allowed me to download the full 12GB installer but once again the install macOS app was missing the content that was needed according to the guide I found online detailed below. Problem was that the Install macOS app was a little light in megabytes and wasn't the full installer. Found a python script (dont remember name) that access apples catalogue and downloaded two different versions. First issue is acquiring the full installer. ![]() Been trying to make a Big Sur ISO file and had an issue of which makes me wonder if I did it correctly. ![]()
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