Hitachi C4K60 Specifications - Page 105

7.5.44. SMART Disable Operations [B0h, Sub D9h] Task File Registers Command LBA High LBA Mid LBA Low Device/Head Sector Count Features 7 6 5 4 3 2 1 0 B0h C2h 4Fh XX X X X DRV X X X X XX D9h The SMART DISABLE OPERATIONS command disables all SMART capabilities within the device including any and all timer functions related exclusively to this feature. After receipt of this command the device will disable all SMART operations. Attribute values will no longer be monitored or saved by the device. The device will preserve the state of SMART (either enabled or disabled) across power cycles. If SMART is not enabled, or if the values in the Features, LBA Mid (Cylinder Low) or LBA High (Cylinder High) registers are invalid, an Aborted command error is posted. Upon receipt of the SMART DISABLE OPERATIONS command from the host, the device sets BSY, disables SMART capabilities and functions, clears BSY, and asserts INTRQ. After receipt of this command by the device, all other SMART commands, with the exception of SMART ENABLE OPERATIONS, are disabled and invalid and are aborted by the device (including SMART DISABLE OPERATIONS commands), returning the Aborted command error. K6610170 Rev.2 Dec 22, 2004 - 105 -