Adobe error "Case-sensitive drives not supported" or similar install error | Mac OS


When you try to install an Adobe product, you receive the message, "Case-sensitive drives not supported" in the Install Options panel. Or, you receive an error message such as the following:

  • File system of setup volume not supported.
  • This software cannot be installed because the file system of the OS volume is not supported.
  • Unsupported OS version.
  • Unsupported file system on system disk.


Install the product onto an HFS+ or HFSJ non-case-sensitive drive.

Additional information

To determine whether your drive uses a supported file system (like Mac OS Extended [Journaled]), open the Disk Utility application in your Applications/Utilities folder. The graphic below shows where you can find the drive format information. Click your drive and note of the Format type. 

Disk Utility

You cannot install Adobe products on a volume that uses a case-sensitive file system, such as HSFX (HFS+) or UFS. This limitation applies to both the startup drive as well as the drive onto which the software is installed.


Contact Apple Support to format the drive and make it case-insensitive, and then try to install the Adobe app.