Problem with WD Advanced Format drive in LINUX (WD15EARS)

WD Internal Drives Desktop & Mobile Drives
29

I tried all steps (described here) with parted and fdisk to configure my WD20EARS under Linux with the actual kernel.

My results are to every time the same. I see 512 bytes as phyiscal and logical and hdparm shows me a value with 50 MB/s. I think this is too slow.

What should i do?