Contents

kIOPropertyHeadCountKey

Declaration

#define kIOPropertyHeadCountKey

Discussion

This key is used to define the number of heads for a particular medium.

Requirement: Mandatory element of the Rigid Disk Geometry dictionary.

Example:

 
 
<dict>
   <key>Device Characteristics</key>
   <dict>
   	<key>Vendor Name</key>
   	<string>Apple</string>
   	<key>Product Name</key>
   	<string>iPod</string>
   	<key>Product Revision Level</key>
   	<string>1.0</string>
   	<key>Rigid Disk Geometry</key>
   	<dict>
   		<key>Sector Count per Track</key>
   		<integer>12345</integer>
   		<key>Head Count</key>
   		<integer>12</integer>
   		<key>Cylinder Count</key>
   		<integer>12345</integer>
   		<key>Bytes per Physical Sector</key>
   		<integer>512</integer>
   	</dict>
   </dict>
</dict>

See Also

Macros