darkages: your suggestion worked; I had the dvd burner plugged into a SATA 6GB port. Thank you very much for the advice. Now for the technical question: why did that work?
Because the universe has smiled on you!
Some SATA devices need to be jumper configured to be SATA revision 1,2 or 3 controller compatible.
Sometimes there is a BIOS setting.... or you can use SATA3 plug on the motherboard. http://en.wikipedia.org/wiki/Serial_ATA
SATA 1.5 Gbit/s and SATA 3 Gbit/s
The designers of SATA aimed for backward and forward compatibility with future revisions of the SATA standard. To prevent interoperability problems that could occur when next generation SATA drives are installed on motherboards with legacy standard SATA 1.5 Gbit/s motherboard host controllers, many manufacturers have made it easy to switch those newer drives to the previous standard's mode. For example, Seagate/Maxtor has added a user-accessible jumper-switch, known as the Force 150, to enable the drive to be switched between 1.5 Gbit/s and 3 Gbit/s operation. Western Digital uses a jumper setting called OPT1 Enabled to force 1.5 Gbit/s data transfer speed (OPT1 is enabled by putting the jumper on pins 5 & 6). Samsung drives can be switched to 1.5 Gbit/s mode using software that may be downloaded from the manufacturer's website. Upgrading a Samsung drive in this manner requires the temporary use of a SATA-2 (SATA 3.0 Gbit/s) controller while programming the drive.
blah blah... I'm sure you get the drift!
MSI H67MA-E45 Motherboard (& many others)http://www.msi.com/product/mb/H67MA-E45.html#/?div=Detail
• SATAII controller integrated in Intel® H67 chipset
- Up to 3Gb/s transfer speed.
- Supports four SATAII ports (SATA3~6) by H67 PCH
• SATAIII controller integrated in Intel® H67 chipset
- Up to 6Gb/s transfer speed.
- Supports two SATAIII ports (SATA1~2) by H67 PCH
- SATA1~6 ports support RAID 0/1/5/10 mode
In short your> dvd: samsung sata dvd burner is being detected (/dev/sr0) when plugged into SATAIII controller but coms fail in operation.
- so use SATAII revision controller instead.