Thinkpad 701Cs Hidden File

[Richard Joseph <richjos@mary.iia.org>]

I recently bought a Thinkpad 701CS which came with OS/2 and Windows 3.11. 
I deleted the OS/2 using the "button" in the Windows  OS/2 group. Looking 
at my hard disk I find one large file in the root directory that I can't 
identify and wonder if it's a leftover from OS/2, or what else it's used 
for. It's a hidden, system, read-only file named "ea data. sf" (with 
spaces in the name and extension). It's 10Meg so if I don't need it I 
certainly want to get rid of it, but I've discovered through painful 
experience that not knowing what it is doesn't mean it shouldn't be 
there. There's also a small file named"wp root. sf". Can anyone shed some 
light on what they are?

Thanks for any help!