Category: <b>disk I/O enhancements</b>
<br>Flags: Undocumented function<p>
<pre><b>INT 2F - IOMEGA DRIVERS - UNLOCK MEDIA IN DRIVE / EJECT</b>

	AX = 5712h
	BX = program ID??? (0201h used by GUEST.EXE)
	DX = 496Fh ('Io')
Return: AX = new lock count (00h = unlocked)
Note:	if the lock count was already zero, the storage medium is ejected
	  from the drive
SeeAlso: AX=5700h,AX=5701h,AX=5710h,AX=5711h
</pre>