input/output error on hd

Marty Landman martster at
Thu Feb 22 23:14:54 UTC 2007


Below is what I see in response to the cmd; as I'm unfamiliar with it could
you please be more explicit about how I may proceed?


%sudo bsdlabel -e /dev/ad1s1
# /dev/ad1s1:
8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
  a: 490234736       16    unused        0     0
  c: 490223412        0    unused        0     0         # "raw" part, don't

On 2/22/07, Jerry McAllister <jerrymc at> wrote:
> On Thu, Feb 22, 2007 at 04:34:24PM -0600, Derek Ragona wrote:
> > You may have lost the partition table.  You can try repartitioning the
> > drive but do NOT do a newfs.  You can easily try it in sysinstall.
> Yes, that has been mentioned - I wasn't sure if it would work as
> desired - without overwriting too much - or not.  But, if it is tried
> , be sure to use the exact partition schema as was done before.  I
> think that was everything in one partition - called c, but I am not
> sure that is exactly what was done.
> So, the question is, did the OP use bsdlabel (alone or in sysinstall)
> when originally creating that filesystem?   If so, probably using
> bsdlabel again on it - WITHOUT doing a newfs - would be worth trying.
> It probably can't do anything worse than what is already the case.
> If it was all one partition in a single slice, then run bsdlabel -e
> on the slice /dev/ad1s1 and take out the unused type from 'c' and
> make it BSD4.2.    Make the offset '*' and the size be everything.
> Then exit out and hope for the best.
> ////jerry

More information about the freebsd-questions mailing list