Newbie question on recovering via USB drive

Hi all.  Sorry for this newbie question, but I've been googling it for 45 minutes and figured someone here will instantly know the answer.

 

I've got a Thinkpad x31 which can boot from USB ports. My thumb disk boots to DOS 4.x -- primitive, I know -- and I can see the CDROM and drives hooked up to USB ports just fine.

 

But I can't see the system's internal IDE drive.  Aren't I supposed to be able to??  If I can't see that drive, how will Ghost ever restore my system image?
 
Thanks for your kind responses.