More on "Unreadable" Partition Tables
cornel panceac
cpanceac at gmail.com
Sat Oct 11 18:41:06 UTC 2008
2008/10/11 Michal Jaegermann <michal at harddata.com>
> On Sat, Oct 11, 2008 at 02:06:47PM -0400, Chuck Anderson wrote:
> >
> > On Sat, Oct 11, 2008 at 08:25:29PM +0300, cornel panceac wrote:
> > > 2008/10/11 Chuck Forsberg WA7KGX N2469R <caf at omen.com>
> > >
> > > > Here is the fdisk printout for the "offending" partition table.
> > > > The MBR boots to sda8 (openSUSE).
> > > >
> > > > Disk /dev/sda: 250.0 GB, 250059350016 bytes
> > > > 255 heads, 63 sectors/track, 30401 cylinders
> > > > Units = cylinders of 16065 * 512 = 8225280 bytes
> > > > Disk identifier: 0xe4c0e4c0
> > > >
> > > > Device Boot Start End Blocks Id System
> > > > /dev/sda1 * 1 6374 51199123+ 7 HPFS/NTFS
> > > > /dev/sda2 6375 6505 1052257+ 83 Linux
> > > > /dev/sda3 6506 24379 143572905 f W95 Ext'd
> (LBA)
> > > > /dev/sda4 19259 21808 20482875 83 Linux
> > > > /dev/sda5 6506 6897 3148708+ 82 Linux swap /
> > > > Solaris
> > > > /dev/sda6 6898 9508 20972826 83 Linux
> > > > /dev/sda7 9509 11941 19543041 83 Linux
> > > > /dev/sda8 11942 15588 29294496 83 Linux
> > > > /dev/sda9 15589 18020 19535008+ 83 Linux
> > > > /dev/sda10 18021 19258 9944203+ 83 Linux
> > > > /dev/sda11 21809 24379 20651526 83 Linux
> > >
> > > you have a primary partition over an extended?
> >
> > Yes, this looks like a broken partition table with overlapping
> > partitions.
>
> Not necessarily. /dev/sda4 sits between sda10 and sda11 but
> /dev/sda3 is extended. Things are out of order and that may be
> not to liking of some tools.
>
> > This might
> > be fixable by moving sda4 to the extended partition, in which case it
> > would become sda11 and sda11 would become sda12, but it may be tricky
> > to do it.
>
> Nah! This shold be very simple to do. Redirect an output
> of 'sfdisk -d /dev/sda' to a file, edit results to put that
> into an order and feed that to sfdisk back. This should be it.
> Rewrites of partition tables do not touch file systems although
> fstab may need some fixups depending on how it was done.
>
> Keep a copy of an original ouput from 'sfdisk -d /dev/sda'
> (or even better an image of the current partition table too)
> in case you messed something and you need to restore
> the current state.
nice trick, michal.
>
>
> Michal
>
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Linux counter #213090
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