XDF (Extended Density Format)
XDF (Extended Density Format) is a special way of formatting a PC-compatible floppy disk, so that it can store more than the usual amount of data. It was developed by IBM, and used on distribution disks for some versions of OS/2 and PC-DOS.
There are several variants of XDF. The most common seems to be the 1840KB format for what would normally be a 1.44M 3.5" floppy disk.
- DMF (Distribution Media Format) - a comparable format
- IBM OS/2 Warp 3 Collection, e.g. Blue - 8.162 - English - Diskettes → Disk2, Disk3, ...