I have a full copy of QNX 4.25. When I unzipped the package, I see a QNX boot file and QNX Disks 1 thru 5 (among other files). All these files have the DDI extension. What are they? How do I make them into bootable floppies so I can create my QNX environment? Please forgive me as I know so little about this OS.
DDI is just a DiskDupe Image file. You can search/download the DiskDupe software and make the floppies out of those DDI files.
BTW, I don’t think QNX ever distributed QNX 4 via those DDI images, not sure where you got them, probably through your company’s internal distribution channel?