It’s also one of the reasons why upgrading a previous macOS VM fails as it probably already has Parallels Tools installed. This is what results in the “stuck at black screen”, the “won’t let me log in, just kicks me out” problem and probably other issues. *** Note - do NOT install Parallels Tools at any point. while it’s installing, call your parents and check in.follow the instructions for normal installation going forward.close the Configuration dialog and click Continue.(replace inside the quotes with your mac board_id from step #2) (replace inside the quotes with your mac model from step #2 ) _id="Mac-XXXXYYYZZZ" If your install fails, double-check this setting) in Boot Order, open Advanced Settings and copy-paste the following lines: (note, Parallels failed to save these lines a couple of times until I copy-pasted them one at a time and hit return after each line - go figure.for the Hard Disk, open Advanced Settings, click Properties and increase the size to 128GB.for Graphics, I set Memory to 512MB with “Scaled” graphics - again, being a bit paranoid, not certain 512MB is required.I set the RAM to 8GB and processors to 4 - but I was being a bit paranoid.Parallels will open its familiar Configuration dialog:.name the VM and check “Customize settings before installation” & click Continue.select the DMG you created in step #1, click Continue. select “Install Windows or another OS from…”, click Continue.click the + button or select File->new in Parallels control center.Also, unless I state otherwise, leave settings their default Don’t try upgrading a previous macOS version VM. copy the hardware model string for use belowģ.copy the Mac-xxxxxxx text for use below.( that’s a dash and lower case L, then the pipe character, FYI ) In Terminal, on the Mac that’s running Parallels type (or copy/paste) ioreg -l | grep board-id.Get the correct board_id and hw_model information about your particular Mac: It’s a series of 6-7 command line strings but not too toughĢ. The technique to make one is available via Google but I used the one described here. Make an installer DMG from the downloaded “Install macOS Beta” app. I’m running on a 2017 iMac w/ 32 GB RAM with Mojave as my system OSĪlso, I saw almost every different error that people have been reporting and this method avoided all of them (so far, at least)ġ. I figured I’d cross post it here as well as many of us use VMs for testing new systems, etc.:įor those who have been trying to run Big Sur as a guest OS in Parallels, this solution is clean and works:įirst, I did this in Parallels 15 for Mac “home edition”. I finally figured this out last week and posted it to the Parallels forum.
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