Disk Space Display in MSI Installers

[lrandersson]

What is the problem or limitation you are having?

NSIS installers display "Space available" and "Space required" during installation, helping users verify they have sufficient disk space before proceeding. The current WiX-based MSI template doesn't include this information, making MSI installers less informative than their NSIS counterparts.

Describe the solution you'd like

Add disk space information to the MSI installer UI. WiX provides built-in support for this via:

• DiskCostDlg - A standard dialog showing per-volume space requirements
• VolumeCostList - A control that displays available/required space

This could be added to the dialog flow (e.g., before VerifyReadyDlg) or as a popup accessible from InstallDirDlg.

Describe alternatives you've considered

1. Insert DiskCostDlg as a dedicated step in the install wizard
2. Embed VolumeCostList control directly into VerifyReadyDlg

Additional context

The template already includes <UIRef Id="WixUI_Common" />, so the standard DiskCostDlg should be available without additional dependencies.

[freakboy3742]

Sure - I guess it makes sense to display a disk space page, and from the look of it, it should be a relatively straightforward addition.

It's worth noting that this won't address any disk usage in the post-install script, but that's not unique to MSIs.