30

 

U10 Family Product Manual, Rev. A

 

42H

Ultra DMA mode 2

 

43H

Ultra DMA mode 3

 

44H

Ultra DMA mode 4

05H

Enable advanced power management.

55H

Disable read look-ahead (read cache) feature.

82H

Disable write cache.

AAH

Enable read look-ahead (read cache) feature (default).

Note. At power-on, or after a hardware or software reset, the default values of the features are as indicated above.

3.1.4 S.M.A.R.T. commands

S.M.A.R.T. provides near-term failure prediction for disc drives. When S.M.A.R.T. is enabled, the drive monitors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines that a failure is likely, S.M.A.R.T. makes a status report available to the host. Not all failures are predictable. S.M.A.R.T. predictability is limited to the attributes the drive can monitor. For more information on S.M.A.R.T. commands and implementation, see the Draft ATA-5 Standard.

This drive is shipped with S.M.A.R.T. features disabled. You must have a recent BIOS or software package that supports S.M.A.R.T. to enable this feature. The table below shows the S.M.A.R.T. command codes that the drive uses.

Code in Features

S.M.A.R.T. Command

Register

 

 

 

 

 

D0H

S.M.A.R.T. Read Data

D1H

Obsolete

 

 

D2H

S.M.A.R.T. Enable/Disable Attribute Autosave

 

 

D3H

S.M.A.R.T. Save Attribute Values

 

 

D4H

S.M.A.R.T. Execute Off-line Immediate

 

 

D5H

S.M.A.R.T. Read Log Sector

 

 

D6H

S.M.A.R.T. Write Log Sector

 

 

D7H

Obsolete