In the last episode (Jun 03), Andreas Klemm said:
> On Tue, Jun 03, 2003 at 01:23:35AM -0500, Dan Nelson wrote:
> > In the last episode (Jun 03), Andreas Klemm said:
> > > ad2: UDMA ICRC error cmd=read fsbn 74689079 of 74689079-74689206 retrying
> > > ad2: UDMA ICRC error cmd=read fsbn 74689079 of 74689079-74689206 retrying
> > >
> > > What exactly does an UDMA ICRC error mean ? I think this is
> > > simply a read error. AFAIK an IDE disk doesn't have spare sectors
> > > or am I wrong ? How severe is this error ? What do you think ??
> >
> > An ICRC error is an error detected by the IDE controller. It
> > usually means a cabling problem, as a disk error would be reported
> > by the drive, not the controller. From the ATA spec:
> >
> > ICRC shall be set to one if an interface CRC error has occurred
> > during an Ultra DMA data transfer. The content of this bit is
> > not applicable for Multiword DMA transfers.
> >
> > There are other error bits that indicate uncorrectable media errors.
> ^^^^^^^^^^^^^^^^^^^^^^^^^^
> Does this mean, that data corruption occurred ??
No; I'm just saying that the ATA spec has a lot of status/error bits :)
If you had physical data corruption you'd see something other than ICRC.
--
Dan Nelson
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