Mailinglist Archive: opensuse (3394 mails)

[jebs@xxxxxxxxxxxxxx (Jason)]

Ok, iv'e re-entered the apporpriate cylinder boundary values, and written
the partition to disk (and rebooted). Here's what it looks like now:

Disk /dev/hdc: 255 heads, 63 sectors, 784 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/hdc1   *         1       127   1020096    6  FAT16
/dev/hdc2           624       784   1293232+  83  Linux
/dev/hdc4           128       637   4096575    5  Extended
/dev/hdc5           128       129     16033+  83  Linux
/dev/hdc6           130       193    514048+  83  Linux
/dev/hdc7           194       321   1028128+  83  Linux
/dev/hdc8           322       334    104391   83  Linux
/dev/hdc9           335       589   2048256   83  Linux
/dev/hdc10          590       606    136521   82  Linux swap
/dev/hdc11          607       623    136521   82  Linux swap

Keep in mind devs 5-11 were re-created by me. /dev/hdc2 somehow
partially survived. /dev/hdc4 had correct cylinder boundary vals
so I left that alone.

BUT, some block totals are off by 1 (/dev/hdc8 should be 104390,
/dev/hdc9 should be 2048255, hdc10 and hdc11 should be 136520.

When I try mounting them (as an ext2) i'm receiving:
mount: wrong fs type, bad option, bad superblock on /dev/hdc6,
       or too many mounted file systems

The only affected device that mounts is /dev/hdc10 - its shows
me the lost+found directory.

Any tips greatly appreciated.

On Fri, 3 Mar 2000, Chris Reeves wrote:

> Emerald wrote:
> > 
> > Hmm, not sure about this one, kind of in doubt here, but I know that
> > 'fdisk /mbr' writes a new master boot record to the HD and I think it
> > also checks the disk for the partitions and writes a new partition table
> > with what it finds.
> > Guess it would really hurt to try though, but remember that if you
> > installed LILO in the MBR, it'll be gone after this.
> > 
> > If I'm wrong about the partition table, please tell me...
> 
> Well, I'm telling you ;-) fdisk /mbr will *not* rebuild your partition table,
> it only zeros the MBR. In this case, I don't think I'd use fdisk /mbr at all.
> 
> > P.S.: If you have partition magic, you can run a check on your HD and
> > it'll tell you if there's something wrong with your partition table or
> > anything else, but you can also use the SuSE cd's for this (just go
> > through the installation untill it asks where you want to install,
> > there'll be an output of fdisk)
> > 
> > Jason wrote:
> > >
> > > I believe a Win virus did some serious damage to my drive.
> > > I used to have around 10 logical linux partitions, now they're
> > > all gone (after using Win98).
> > >
> > > The primary partition (/dev/hda1) is still there. The
> > > extended partition is still there (no logicals now).
> > >
> > > What I don't have is a rescue disk.
> 
> Well, what you can do is boot of the CD and select 'Start Rescue System' or
> something similar. This will let you boot of your harddrive (assuming / is the
> partititon that survived, hda1). You just need to get access to fdisk somehow.
> 
> > > What I do have are the start and end cylinder values for each
> > > partition, the size of them, the device they're associated with,
> > > their mount points, and inode densities.
> 
> This is excellent news!! I doubt that a Windows virus could do anything to the
> data on your Linux partitions, unless it really tried, so it's probably just
> the partition table that is nackered. Since you have the start and end cylinder
> values for your partitions (that was very wise of you to note them down  ;->> )
> you should be able to just start up fdisk ('fdisk /dev/hda') and recreate your
> partitions with the *exact* same cylinder values. But then again, it sounds
> like you've done this before...
> 
> > > The data is still there (I feel) - but the partition table is corrupt.
> 
> I would definitely agree here. I'd say this situation is 90% recoverable,
> mainly due to the fact that you've got those cylinder boundaries noted down...
> 
> > > Any way of fixing it?? (I remeber on a previous occasion, I tried using
> > > fdisk to recreate the partitions, using the start and end cylinder values
> > > I had - and it partially worked.. should I try this again??)
> 
> Yes, but be carefull and make sure you get it right!
> 
> Good luck! And remember - any problems, you know who to call...
> 	Chris
> -- 
>       __   _
>   -o)/ /  (_)__  __ ____  __      Chris Reeves
>   /\\ /__/ / _ \/ // /\ \/ /      ICQ# 22219005
>  _\_v __/_/_//_/\_,_/ /_/\_\
> 


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