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    SubjectRe: GA-MA790FX-DS5 SATA ahci NCQ erros on Jmicron 20360/20363 (JMB363) kernel 2.6.25-2 Debian/Lenny
    On Sunday 24 August 2008 00:38:36 Jeff Garzik wrote:
    > See for an
    > introduction.
    > In general, tons of ATA bus errors and SError register bits means that
    > problems are coming from the ATA bus, a.k.a. the SATA cable and its
    > related connections.
    > So... suspect bad cables, bad port connectors, cable interference,
    > motherboard-caused interference or grounding problems, power supply
    > problems.
    hmm, or something totally odd...

    what happens if you do: (after you made a backup!)
    "dd if=/dev/sdX(where X is your affected hdd?) of=/dev/null bs=1"
    The important bit is the small bs (blocksize) number.
    You can throw in a O_DIRECT flag to disable the caches, or
    if you have some "empty" partition space, you can "dd" into
    it with a small blocksize too)

    my seagate & even a samsung hd103uj doesn't like that and will spew
    out the same sort problems you have just posted... (but they work fine,
    if I don't do nasty dd things!)

    and unfortunatly my md(raid1) seems to do lots of "small" reads & writes
    when it starts to check/resync the whole 1TB array :-/.


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