Disable Metal in favour of OpenGL

On newer Macs, Metal is the preferred technology for drawing the pie graph. On some older Macs, though, Metal could cause drawing issues, in which case using the older OpenGL technology is preferred.

To disable Metal, open the Terminal (in /Applications/Utilities), copy and paste the following line:

defaults write org.desairem.Disk-Graph disableMetal true

and press Enter.

To enable Metal again, use the following line instead:

defaults delete org.desairem.Disk-Graph disableMetal

File sort order

By default, files are sorted clockwise by decreasing file size. From the View menu, you can set a different sort order.

File Size

The default. You can quickly find files that take away most of your disk space.

File Size on Disk

When opening an ordinary directory, this setting will produce a similar display as for the File Size sort order (since usually there is only a small difference between the file size and the file size on volume, or allocated file size). When scanning a directory managed by a cloud service, this setting will effectively hide all those files that are not currently on the selected drive but are downloaded on demand (since their allocated file size is 0 Bytes).

Child Count

Directories are sorted by the number of subfiles, followed by all the regular files sorted in alphabetical order. Having a lot of (small) files may slow down some operations: for example, copying a directory containing many files is often slower than copying a directory with less files but the same overall size. With this sort mode you can quickly find such slow directories which you may want to exclude from a periodic copy operation or backup.

Granting access to protected files

By default, Disk Graph can only show files that are not protected by the operating system, which will result in the graph showing more free space than expected when scanning directories such as /Library or /System. Starting from macOS 10.14, you can grant access to these protected system files.

  1. Go to System Settings > Security & Privacy > Privacy > Full Disk Access.
  2. Click on the lock at the bottom left of the window and enter your system password.
  3. Click on the plus button and select Disk Graph.
  4. Click on the lock again. You can now close the window.