 commands which may be useful for some applications.</p>
<table class="lst">
<caption>Example of optional ioctl command</caption>
<tr><th>Command</th><th>Description</th></tr>
<tr><td>CTRL_FORMAT</td><td>Creates a physical format on the media. If <tt class="arg">buff</tt> is not null, it is pointer to the call-back function for progress notification.</td></tr>
<tr><td>CTRL_POWER_IDLE</td><td>Puts the device idle state. <tt>STA_NOINIT</tt> in the current status flags may not be set if the device goes ac