JM>This is only on an HPFS partition.  I tried it on a FAT partition
 JM>and it said "file not found".

[D:\] VER

The Operating System/2 Version is 3.00 

[D:\] CHKDSK

The current hard disk drive is: D:
The type of file system for the disk is FAT.
The volume label is DOS.
The Volume Serial Number is 259A-7414.
...

[D:\] DIR NUL

The volume label in drive D is DOS.
The Volume Serial Number is 259A:7414.

Directory of \DEV

NUL              1024   1-15-95   1:29a
        1 file(s)       1024 bytes used

--- XHEd-OS/2 1.22