INT 2F U - DOS 3.0+ internal - PERFORM CRITICAL ERROR INTERRUPT AX = 120Ah DS = SS = DOS DS (must be using a DOS internal stack) STACK: WORD extended error code Return: AL = user response (0=ignore, 1=retry, 2=abort, 3=fail) CF clear if retry, set otherwise STACK unchanged Notes: can only be called during a DOS function call, as it uses various fields in the SDAsee Swappable Data Area to set up the registers for the INT 24 reportedly sets current DPBsee Drive Paramter Block's first root directory sector to 1 SeeAlso: INT 24