Hi,
can anyone point me to a page or somewhat where "ATA or SCSI CDB" commands are listed or explained?
A HDD in a laptop makes strange noises from time to time and I thought it might be some kind of power-saving setting that causes it. So I searched a little and found some pages where they pass "camcontrol() cmd" commands to the device.
For example the following command should output the power state of ada0
These commands seem to be hex-codes, but I don't know what they mean, so I won't pass them to the device. I searched for some explainations of these codes, but I didn't find any page. One guy wrote that these commands are device-specific, so you need to read the device's specifications. Is this true or are there any standards? Could you help me?
Thanks
can anyone point me to a page or somewhat where "ATA or SCSI CDB" commands are listed or explained?
A HDD in a laptop makes strange noises from time to time and I thought it might be some kind of power-saving setting that causes it. So I searched a little and found some pages where they pass "camcontrol() cmd" commands to the device.
For example the following command should output the power state of ada0
Code:
camcontrol cmd ada0 -a "E5 00 00 00 00 00 00 00 00 00 00 00" -r -These commands seem to be hex-codes, but I don't know what they mean, so I won't pass them to the device. I searched for some explainations of these codes, but I didn't find any page. One guy wrote that these commands are device-specific, so you need to read the device's specifications. Is this true or are there any standards? Could you help me?
Thanks
