Re: Restore partition table

From: Bela Lubkin (belal_at_sco.com)
Date: 08/28/03 

Date: Thu, 28 Aug 2003 21:15:19 GMT
To: scomsc@xenitec.ca

Roberto Zini wrote:

> gtori wrote:
> > On SCO Openserver 5.0.6, whit command badtrk -e .... i have cleaned the
> > partition table.
> >
> > Thre's a tool for restore a correct table, or a tool for search the
> > first block by any file system on the hard disk ?
>
> I think a better explanation of what happened is in order.
>
> This guy got in touch with me this afternoon since he wanted to mount an
> existing SCO OS5 HD (taken from a previously working box) on a new SCO
> OS5 box as to copy some data from the old HD to the new one.
>
> He previously executed "mkdev hd" on the new server (the one where data
> had to be copied to) but, while doing so, he managed to corrupt the
> divvy table on the HD, probably because "mkdev hd" executed "badtrk -e"
> and allocated a new bad tracks table.
>
> Dunno about the answers given to "mkdev hd" prompts so I'm unable to
> describe what he did in detail.
>
> As a result, divvy is now unable to detect the previously installed
> filesystems (on the old HD) and thus he's unable to mount it and copy
> the data over the new one.
>
> Is there a method to recover the original divvy layout ?

See my previous post.

`mkdev hd` _does_ run `badtrk`, probably with "-e" flag. If you make
changes and tell it to write them to the disk, you lose the divvy table.
If you just quit `badtrk` and tell it _not_ to write changes, you don't.
So that's where he went wrong -- not that the script makes it very clear
what to do...

>Bela<

Relevant Pages

  • Re: Restore partition table
    ... > You will now have a directory with several special devices that can be ... > You can mount the valid entries as normal. ... only work if the divvy table wasn't destroyed. ... and partitions will only be correct if the division and partition tables ...
    (comp.unix.sco.misc)
  • Re: Using dd to Make a Clone of a Drive
    ... dump, and restore option. ... newfs -U /dev/ad1s1a ... mount /dev/ad1s1a /mnt ... Right:) It also allows restoring in a different partition layout. ...
    (freebsd-questions)
  • RE: corrupted drive
    ... I ran winternals disk commander on the drive but it tells ... me it could not mount the partition. ... restore this? ...
    (microsoft.public.windowsxp.general)
  • Re: flarcreate
    ... Later if I restore whole disk every partition restore?? ... now if I mount every partition and use flarcreate to create image I ...
    (comp.unix.solaris)
  • flarcreate
    ... I run system in single user mode and mount other 2 partition ... Later if I restore whole disk every partition restore?? ...
    (comp.sys.sun.admin)