Disk question

Lowell Gilbert freebsd-questions-local at be-well.ilk.org
Fri Nov 14 06:09:37 PST 2003


Gannater János <gannater at freemail.hu> writes:

> Why I booted my computer the following error came up:
> ad1s1a: UDMA ICRC error reading fsbn 6144095 of 16-31 (ad1s1 bn 
> 6144095; cn 6095 tn 5 sn 20) retrying
> ad1s1a: UDMA ICRC error reading fsbn 6144095 of 16-31 (ad1s1 bn 
> 6144095; cn 6095 tn 5 sn 20) falling back to PIO mode
> Is there a way to fix these disk errors?

Certainly.  If you replace the disk, disk controller, and cable, the
errors will certainly go away.  Doing one of those would be enough,
but I have no way to know which piece of hardware is causing the
problem.  I recommend starting by just reseating the cable; in my
experience, this often clears up ATA bus problems.

> Another question;
> What does it mean if after a Connection attempt I see: flags:0x02

Where do you see that?  What else do you see with it?


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