[Unity Installer] Installer can't install unity3d on Disk

Question

When I trying to select destination disk to install unity3d from unity installer, it gives me the message "Unity can't be installed on this disk. The contents of this disk can't be changed".

Every thing works find at the first, but after I installed Unity3d using .pkg file, it erased all my previous platform support files and the installer can't access the disk anymore. alt text

Answer 1

Answer by goku9001 · Jan 15, 2020 at 10:47 AM

Same problem here. I need to install Unity Editor 5.6 on macOS Catalina and I see same message.

Did you find any solution?

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bthes · Jan 15, 2020 at 12:28 PM 0

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Yes, finally downgraded to $$anonymous$$ojave. Unity was not the only software that has problems with Catalina.

This solved the problem by being able to write the software to the volume.

But even on $$anonymous$$ojave: After installing Unity will utilize system.GetSerialnumber() at every startup and crash. So I need to set this anyway.

Answer 2

Answer by dstrawberrygrrl · Feb 13, 2020 at 04:17 PM

I have been unable to install any Unity version on my mac since upgrading to Catalina, I can only use the versions of Unity that were on the laptop after cloning my drive from my old machine. Unity hub will download the new version but then it "disappears" from the grid.

I went to https://unity3d.com/get-unity/download/archive to try the direct route, and had to right-click and Open because the installer is not signed (!) and saw the same message as @xinbot that the contents of my drive could not be changed.

I also tried disabling Gatekeeper to see if that would help (https://www.imore.com/how-open-apps-anywhere-macos-catalina-and-mojave) but no, that made no difference. I uninstalled my antivirus and disabled the Firewall as a test, but that made no difference.

I have Catalina on a new Macbook 16, with Filevault enabled. Sadly, I can't downgrade to Mojave on this machine.

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dstrawberrygrrl · Feb 14, 2020 at 05:35 PM 1

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In case it helps anyone else, my workaround was to install to an external hard drive and then copy the App across to my $$anonymous$$ac's Applications folder and then add it to Hub manually. Very frustrating process.

tmbarker dstrawberrygrrl · Feb 19, 2020 at 03:04 AM 0

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This worked for me, thanks for solving a huge headache with a slightly smaller one.

dstrawberrygrrl · Mar 20, 2020 at 05:32 PM 0

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An update: I was able to successfully install 2019.3.3f1 and 2019.3.6f1 from the hub - hopefully the most recent installers have fixed this issue.

Answer 3

Answer by Fantastic_Balage · Mar 20, 2020 at 08:48 AM

Hi guys,

I'm experimenting with the same issue currently.

What I can recommend to you is to try to install to the following paths: - /Users/USERNAME/Applications - /Users/USERNAME/Documents - /Users/USERNAME/Downloads

Make sure you have added Unity and Unity Hub in System Settings > Security & Privacy: - Full disk access - Files & folders - Developer Tools

Also, if you want collaborate to function, you need to use Hub, no exceptions I found so far.

@swpowe 's method can work as well, but don't forget to add the installation to Hub with 'Locate' under 'Installs'. In this way however, you won't be able ti use Hub's 'Add Modules' option.

![alt text][1] [1]: /storage/temp/154615-unity-hub-installs-locate.png

unity-hub-installs-locate.png (106.3 kB)

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Answer 4

Answer by rajshekarreddy · Mar 30, 2020 at 02:52 PM

I'm still suffering with this problem. Anyone found a workaround?

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Answer 5

Answer by ippei · Apr 12, 2021 at 10:00 AM

You can download and install old version unity from unity hub by MacOS Big Sur.

Click the Add button, click the Archive Download link, and select the version of Unity's Unity Hub(Green Button) you want to install.

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[Unity Installer] Installer can't install unity3d on Disk

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