On 06/22/2011 07:56 AM, Paul Menzel wrote:
Dear SATA subsystem folks, please keep my address in CC list since I am not subscribed. This is a reply to my message to the coreboot list [1] and I am adding more current information to it. Am Sonntag, den 19.06.2011, 20:30 +0200 schrieb Paul Menzel: the ASUS M2V-MX SE HAS A VIA K8T890 chipset and the following BIOS version is used.$ sudo dmidecode […] # dmidecode 2.9 SMBIOS 2.4 present. 49 structures occupying 1801 bytes. Table at 0x000F0740. Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: American Megatrends Inc. Version: 0304 Release Date: 10/30/2007 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 512 kB […] I had to replace my hard drive and bought a new SATA-II disk. Unfortunately the full speed is not detected. Instead of UDMA/133 – as was used with the old SATA-I disk – it is reporting UDMA/100.
The UDMA speed doesn't really make a difference with a SATA drive. The transfer speed is really controlled by the SATA link speed (1.5/3/6 Gbps). It only really matters if there is a PATA-SATA bridge somewhere. Some manufacturers never supported UDMA/133 so there's a behavior difference between drives in that some indicate support and some don't. The transfer speed has to be set in most cases for compatibility reasons but it usually doesn't actually affect anything.
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