Format of parameter block for function 62h:
Offset	Size	Description	)
 00h	BYTE	reserved, must be zero (DOS <3.2)
		  bit 0=0: verify single track
			1: verify multiple tracks
		  bits 1-7 reserved, must be zero
		value on return (DOS 3.3+):
		  00h	specified tracks, sectors/track supported by BIOS
		  01h	function not supported by BIOS
		  02h	specified tracks, sectors/track not allowed for drive
		  03h	no disk in drive
 01h	WORD	number of disk head
 03h	WORD	number of disk cylinder
 05h	WORD	number of tracks to verify (equivalent to 255 or fewer sectors)