DeployStudio Big Sur

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DeployStudio does work with Big Sur. Please be aware you will need to ensure your Boot ROM has been updated to enable APFS booting. There is a BootROMUpdate NetBoot image floating around.

You will need a USB updated to Big Sur.

  • Install and Update Big Sur
  • Install DeployStudio 1.7.9 (archive)
  • Open System Preferences : Security & Privacy : Full Disk Access
  • Click the lock to authenticate
  • Open Finder : click go : type /bin and Enter
  • Drag sh from /bin to the Full Disk Access window

The DeployStudio Runtime should now work on your USB drive

To create the Big Sur Image you should be booted to the USB created above in the Mac you would like to image. Be sure to have plenty of free space on your USB.

  • hdiutil create -size 40g -type SPARSE -fs APFS -volname "Macintosh HD" filename.dmg
  • hdiutil attach -nobrowse -noautoopen -noverify -owners on filename.dmg.sparseimage
  • diskutil apfs listsnapshots /dev/disk1s1 | grep "+--" | cut -d" " -f2 | xargs -I{} sudo diskutil apfs deleteSnapshot disk1s1 -uuid {} (substitute your source volume device name. Run once for the Data volume and once on the System
  • sudo asr restore --source /dev/disk1s1 --target /dev/disk5s1 --erase --noprompt (please substitute disk1 with the device name of APFS volume named “Macintosh HD” containing Big Sur and /dev/disk5s1 with the output of hdiutil for the volume named Macintosh HD)
  • Use Disk Utility to eject the image file
  • hdiutil convert -format UDZO filename.dmg.sparseimage -o filename.dmg
  • asr imagescan --source filename.dmg

Now you can put this in the DeployStudio/Masters/APFS directory and make a normal workflow incorporating this image.

To make a workflow in DeployStudio that will update the Boot ROM and bridgeOS

  • Build a workflow that installs 10.13.6 HFS
  • Add a generic script called
  • #!/bin/sh
    cp -R "${DS_REPOSITORY_PATH}/Files/Install macOS" "${DS_LAST_RESTORED_VOLUME}/Applications/"
    exit 0
  • Add a generic script to the workflow called Check the Postponed execution
  • Create a script that contains
  • #!/bin/sh
    "/Applications/Install macOS" --agreetolicense
    exit 0