INT 21 - Software Carousel - CHANGE PARTITION SIZE                              
	AX = DF05h
	BL = task number
	DX = new size in KB
Return: AL = status
	    00h Carousel not running
	    01h successful
	    FFh unsucessful
		AH = error code (01h,04h,05h) (see #01813)
	BX = minimum size allowed
	CX = maximum size available
SeeAlso: AX=DF03h