hdiutil attach /Applications/Install\ macOS\ Sierra\ Public\ Beta.app/Contents/SharedSupport/InstallESD.dmg -noverify -nobrowse -mountpoint /Volumes/install_app
hdiutil create -o /tmp/Sierra.cdr -size 7316m -layout SPUD -fs HFS+J
hdiutil attach /tmp/Sierra.cdr.dmg -noverify -nobrowse -mountpoint /Volumes/install_build
asr restore -source /Volumes/install_app/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erase
rm /Volumes/OS\ X\ Base\ System/System/Installation/Packages
cp -rp /Volumes/install_app/Packages /Volumes/OS\ X\ Base\ System/System/Installation/
cp -rp /Volumes/install_app/BaseSystem.chunklist /Volumes/OS\ X\ Base\ System/BaseSystem.chunklist
cp -rp /Volumes/install_app/BaseSystem.dmg /Volumes/OS\ X\ Base\ System/BaseSystem.dmg
hdiutil detach /Volumes/install_app
hdiutil detach /Volumes/OS\ X\ Base\ System/
hdiutil convert /tmp/Sierra.cdr.dmg -format UDTO -o /tmp/Sierra.iso
mv /tmp/Sierra.iso.cdr ~/Desktop/Sierra.iso
- Create a new El Capitan (there is no option for Sierra at the moment) machine. Leave everything at default
- Boot the virtual machine from the Sierra.iso you created, which you'll find on your desktop. I had to mash F12 while the machine was starting up and then choose 'EFI CD/DVD' in the boot manager. YMMV.
- The install process should be familiar to you. If not, you probably shouldn't be playing with a beta OS ;)
- Grab a coffee, the 15 minute estimation the installer gives you is a complete work of fiction. My install took over an hour.
- Once installed, reboot and complete the new user process. Skip the AppleID login bit, it'll fail on a VirtualBox.
- Shut down the virtual machine and quit VirtualBox.
trying to make a iso for the new 10.13 beta but get stuck at the step:
asr restore -source /Volumes/install_app/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erase
get the error:
Could not recognize "/Volumes/install_app/BaseSystem.dmg" as an image file
done
Could not retrieve scan information - Invalid argument
it seems that the install ESD does not include a BaseSystem.dmg anymore ... from what I can see it only includes the following:
Packages:
Core.pkg
EmbeddedOSFirmware.pkg
FirmwareUpdate.pkg
OSInstall.mpkg
not sure where to go from here but would be great to get a high Sierra version working on a VM for some testing.
thanks!