INT 21 - Software Carousel - CHANGE PARTITION NAME                              
	AX = DF06h
	BL = task number
	CX = length of new name (00h to use default, max 18h)
	DS:SI -> new name
Return: AL = status
	    00h Carousel not running
	    01h successful
	    FFh unsucessful
		AH = error code (01h) (see #01813)
SeeAlso: AX=DF04h