Files with gdi file extension are associated with disc-type GD-ROM.
There is one other file type using
the GDI file extension!
.gdi - Generic download install data
GDI file extension - Sega GD-ROM image
What is gdi file? How to open gdi files?
File type specification:
The gdi file extension is used for a disc-type GD-ROM, created by Sega for game consoles such as NAOMI and Dreamcast.
The gdi file stores disk image catptured from GD-ROM.
This gdi file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.