Hello,

I've just added a WD10EADS disk in my FreeBSD box (<http://www.wdc.com/en/products/Products.asp?DriveID=559 >)

My mother board is few years old and supports only SATA I, so the drive is recognized as SATA150 (which is fine):

        ad6: 953869MB <WDC WD10EADS-00M2B0 01.00A01> at ata3-master SATA150

Unfortunately, I'm unable to find the right geometry in order to format/label the disk. Using sysintall interface to handle the new disk yields to this kind of alerts:

(1st alert) WARNING: A geometry of 1938021/16/63 for ad6 is incorrect ... (2nd alert) WARNING: A geometry of 121601/255/63 for ad6 is incorrect ... (3rd alert) WARNING: A geometry of 121601/255/63 for ad6 is incorrect ...
(ad lib)

So, the software tries to guess the right geometry, but fails and stick with wrong numbers (121601/255/63)

I have this:

        # diskinfo -v ad6
        ad6
                512             # sectorsize
                1000204886016   # mediasize in bytes (932G)
                1953525168      # mediasize in sectors
                1938021         # Cylinders according to firmware.
                16              # Heads according to firmware.
                63              # Sectors according to firmware.


But fdisk thinks it's not good.

And mounting the formated disk fails (121601/255/63):

        # mount /dev/ad6s1c /backup
        mount: /dev/ad6s1c on /backup: incorrect super block

I don't know where to look, the BIOS says nothing about the geometry (unless I've missed something). It's on LBA mode.

patpro

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