Category: <b>disk I/O enhancements</b>
<p>
<pre><b>INT 21 - Brian Antoine Seagate ST-01 SCSI.SYS - IOCTL - EXECUTE COMMANDS</b>

	AX = 4405h
	BX = drive number (00h = default, 01h = A:, etc)
	CX = number of bytes to write
	DS:DX -&gt; SCSIDISK control block (see also <a href=../../it/25/15.html>#01525</a> at AX=4403h"ST-01")
Return: CF clear if successful
	    AX = number of bytes actually written
	CF set on error
	    AX = error code (01h,05h,06h,0Dh) (see <a href=../../it/80/16.html>#01680</a> at AH=59h/BX=0000h)
SeeAlso: AX=4403h"ST-01"
</pre>