Re: "Cannot find file system superblock" error - how to recover?

From: Scott I. Remick (scott_at_sremick.net)
Date: 01/06/04

  • Next message: Ken Seggerman: "Re: How do I read digital camera on USB port with hppsmtools?" 
    Date: Tue, 6 Jan 2004 06:07:23 -0800 (PST)
To: Malcolm Kay <malcolm.kay@internode.on.net>

    --- Malcolm Kay <malcolm.kay@internode.on.net> wrote:
    >
    > Beware; if you write a disklabel (or presumably bsdlabel; I have no
    > experience
    > with 5.x) to ad6 you create a "dangerously dedicated"
    > disk, i.e. a disk without slices.

    Ok. I am not saying that's what I want to do, I only mentioned it because
    the man page for disklabel/bsdlabel uses the entire disk (/dev/da0) as an
    example.

    "man disklabel" brings up bsdlabel, which is why I mention bsdlabel instead.

    http://www.freebsd.org/cgi/man.cgi?query=bsdlabel

    > Are you saying that the disklabels reported for ad6s1 and ad6s1c are
    > different?

    This is correct. Your surprise suggests that it was good I mentioned that,
    eh? :) Glad I haven't done anything yet.

    In summary, ad6s1 returns an offset of 0 and no error. ad6s1c returns an
    offset of 63 and the rest of the info is identical except for the following
    error tagged on at the end:

    partition c: partition extends past end of unit
    bsdlabel: partition c doesn't start at 0!
    bsdlabel: An incorrect partition c may cause problems for standard system
    utilities
    partition e: partition extends past end of unit

    > Under FreeBSD 4.x ad6s1 and ad6s1c would normally be aliases referencing
    > the entire slice. Maybe 5.x is different! I'm now very confused.

    I'm not sure... maybe Sergey wants to pipe in here on this point?

    > What is reported by fdisk?

    Ah, I'm at work now. Can't do that from here... I'll let you know later.

    Thanks!
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  • Next message: Ken Seggerman: "Re: How do I read digital camera on USB port with hppsmtools?"

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