Hdiutil attach /tmp/ -noverify -nobrowse -mountpoint /Volumes/install_build Hdiutil create -o /tmp/Sierra.cdr -size 7316m -layout SPUD -fs HFS+J
To create the blank disk image, run the following command.This will increase the bootable section of the installer which are downloaded as a virtual disk.Hdiutil attach /Applications/Install\ macOS\ Sierra.app/Contents/SharedSupport/InstallESD.dmg -noverify -nobrowse -mountpoint /Volumes/install_app Paste the following command in Terminal and tap on Enter.Go to Application > Utilities to get Terminal which can be used to convert the files into ISO files.Do not upgrade the Mac just you need the downloaded files.After completing the process of downloading, the installer will install it in PC.Go to the Mac App Store and Search for Sierra.This ISO file must be loaded to the Virtual box of the PC. Step # 1: Creating a macOS Sierra ISO fileįirst of all, we need to create an ISO file of macOS Sierra’s Installer. If the above links are not working for mac os VirtualBox image download, then you have to create mac os high sierra VirtualBox image with a slight effort below.