eSATA drive won't mount. Wrong data rate ?

[Steve Siegfried]

Linuxguy123 wrote:
<SNIP>
> 
> One thing that sticks out for me in all this is the SATA data rate.
> Both the computer and the drive are supposed to be 3.0Gb/s devices.  Yet
> the driver wants to connect at 1.5 Gbps.
> 
> The Serial ATA Controller is listed as ahci in hwbrowser.
> 
> # /sbin/lsmod | grep sat
> sata_sil24             16069  0
> libata                131937  3 ata_piix,sata_sil24,ahci
> 
> 
> How should I proceed to get my external drive working ?
> 

Check the manual that came with your motherboard (or the hardware manual
that came with your computer).  3.0GB/s SATA is otherwise known as "SATA
II", "SATA 3.0" and/or "SATA/300".  If it just sez "SATA", it's 1.5Gbs 
"SATA-I" and you either need a controller card or a new motherboard to
use the 3.0GB/s drives.  Sadly some SATA-II drives don't automagically
downshift to SATA-I mode nicely... you may have one of these.

Found out the hard way when I bought 2 VelociRaptor drives'idly,

-S