You'll need an installer for your chosen OS (e.g., Mountain Lion or Mavericks). Boot from it, and when asked where to install, select the new partition you just created. Follow the on-screen instructions to complete the installation.
It will warn about “this software is incompatible with this version of macOS.” Workaround: Right-click the Pro_Tools_10_3_10_Installer.dmg > Show Package Contents. Navigate to Contents/Resources and launch Pro Tools Installer.mpkg directly. This bypasses the initial OS check.
This is almost always caused by an incompatible 3rd-party plug-in. Move all files from your Plug-ins folder to a temporary folder on your desktop, then add them back one by one to isolate the culprit.
Because the Pro Tools 10 installer script checks your macOS version and fails when it detects High Sierra, you must remove this check. install pro tools 103 10 on high sierra
Alternatively, use the community tool PT1010_HFS_Hack.pkg which patches the check automatically.
Follow the on-screen prompts. The installer should now bypass the operating system check and proceed normally.
Once you've booted into your older macOS, you can run the Pro Tools 10.3.10 installer without any issues. Avid provides the full installer for version 10.3.10, and it's recommended to uninstall any previous versions of Pro Tools before proceeding. You'll need an installer for your chosen OS (e
At or error message is the installation failing? Are you running on an SSD or a traditional Hard Drive ?
on High Sierra, which makes it very difficult to clean up if the installation fails or causes system instability. Potential Workarounds
The stock Avid uninstaller will fail on High Sierra. Removal must be done manually. Step 1: Prepare the Pro Tools 10.3.10 Installer It will warn about “this software is incompatible
If you must proceed, you can bypass the OS check using to extract and run the installer components manually:
Pro Tools 10.3.10 is now successfully running on your macOS High Sierra system, allowing you to bridge the gap between classic studio hardware workflows and modern operating system security.
Create a dedicated "Pro Tools" Admin user account to minimize background process interference.
How to Install Avid Pro Tools 10.3.10 on macOS High Sierra (10.13)