Hello,
I tried multiple things ... but without success ... I need to install a Catalina VM on my Catalina host.
Fusion said there is no recovery to do it
giving the app file is not working
generate a dmg is not working.
any idea how to do?
Create your own install media:
hdiutil create 1015.dmg -size 8g -layout SPUD -fs HFS+J
hdiutil attach 1015.dmg -noverify -nobrowse -mountpoint /Volumes/InstallCatalina
sudo /Applications/Install\ macOS\ Catalina\ Beta.app/Contents/Resources/createinstallmedia --volume /Volumes/InstallCatalina
hdiutil detach /Volumes/Install\ macOS\ Catalina\ Beta
hdiutil resize -sectors min 1015.dmg
Use the 1015.dmg in Fusion.
Giving it the .app should work, what's happening instead in your case?
I had an error message: "Unable to create the installation medium"
To fix, I regenerated the media to a USB key with the proper commande and this time it worked...
Me as well, cannot install the latest Catalina beta.
Getting the following error "Unable to create the installation medium"
Create your own install media:
hdiutil create 1015.dmg -size 8g -layout SPUD -fs HFS+J
hdiutil attach 1015.dmg -noverify -nobrowse -mountpoint /Volumes/InstallCatalina
sudo /Applications/Install\ macOS\ Catalina\ Beta.app/Contents/Resources/createinstallmedia --volume /Volumes/InstallCatalina
hdiutil detach /Volumes/Install\ macOS\ Catalina\ Beta
hdiutil resize -sectors min 1015.dmg
Use the 1015.dmg in Fusion.
This worked perfectly. Thank you!
You should accept the answer using hdiutil as that resolves your issue.
This works flawlessly with macOS Big Sur. Thank you!
worked. thank you bogdam. I also need to do this on an external HFS volume as the internal SSD gave errors.