Format of NetWare reply buffer:
Offset	Size	Description	)
 00h	WORD	sectors/block
 02h	WORD	total blocks on volume
 04h	WORD	unused blocks
 06h	WORD	total directory entries
 08h	WORD	unused directory entries
 0Ah 16 BYTEs	volume name, null padded
 1Ah	WORD	removable flag, 0000h = not removable
Note:	all words are big-endian