Linked below is the Google Drive zip file of the VMDK you’ll need to get High Sierra working on VirtualBox. Watch the video above FIRST so that you can successfully download the file as a whole. For whatever reason if you try to download direct from web browser google drive will chop the file into multiple parts breaking the file.
READ THIS: QUOTA EXCEED ERROR… AFTER YOU “ADD TO MY DRIVE” (1:20 into the video) THERE IS AN ADDITIONAL STEP…. YOU HAVE TO RIGHT CLICK ON THE VMDK IN YOUR DRIVE AND MAKE A COPY… THEN REMOVE/DELETE THE ORIGINAL ONE. AFTER YOUVE DONE THIS PROCEED WITH THE REST OF THE STEPS. SORRY THIS IS A PAIN IN THE NECK.
WHAT IS .RAR FILE? THIS IS JUST A STANDARD COMPRESSION FORMAT. USE AN APP LIKE UHARCHIVER FROM THE APP STORE TO EXTRACT.
VERY IMPORTANT: If “Add to My Drive” is NOT appearing and all you see when you right click in Google Drive is “Add shortcut” then click the file and “SHIFT Z” and then “Add to Drive” will appear. Make a copy of the file then delete the original file. If the file is a .rar file, this is a zip file. Unzip before proceeding with finding and using the High Sierra .vmdk file in the Virtual Machine. Took me FOREVER to figure this out! Sheeesh! (Shared in comment by the YouTube Viewer “The Gertie Birdie Chronicles”)
DOWNLOAD : High Sierra VMDK