Anyway that'd be a pain to replicate on a real disk or a virtual DOSBox hard drive.
So, lets just patch out the check, or more accurately, the consequences of the check.
at 1000:87eb we have 74 1d:
JZ LAB_1000_880a
LAB_1000_880a is after the print-uh-oh stuff, and it's jumping if the result of FUN_1000_8798 is non-NULL.