[wplug] floppy disk rescue

[esw148 at psu.edu]

If you just need the word document off of the disk, then you can just open 
the dd image with a text editor and copy the text of the document out.  You 
will lose the formatting, and some of it may not be there, but you may be 
able to recover most of the document.


----- Original Message ----- 
From: "Arnaud Loos" <arnaud at arnaudloos.com>
To: "'General user list'" <wplug at wplug.org>
Sent: Tuesday, November 28, 2006 2:04 PM
Subject: RE: [wplug] floppy disk rescue


> Thanks for the help everyone. I'm still running into a few problems 
> though.
>
> I'm able to successfully create the dd image (I found a script called
> dd_rhelp which uses dd_rescue but seems more thorough). I also used
> Jonathan's suggested method to create a second image. When I try and mount
> either image on loopback using -o loop, I receive an error stating that I
> must specify a filesystem type. Using -t with both vfat and msdos results 
> in
> the same error "wrong fs type, bad option, bad superblock on /dev/loop0".
> Running dmesg shows "can't find a valid FAT filesystem on dev loop0".
>
> I've tried running fsck.msdos on the unmounted image (which is I believe 
> the
> suggested method) but receive an input/output error. I believe I have a
> rather good image which I would be able to extract data from, but I can't
> get it mounted. Any suggestions?
>
> As I stated before, I am able to mount the disk itself, but after 8K of a
> 28K file, cp errors out. Is there another copy program or switch which 
> would
> be able to skip over the bad block and continue copying the rest of the
> file? I'd be more than happy recovering most of the file with a few blocks
> worth of info missing in the middle.
>
> Thanks.
> Arnaud-
>
> -----Original Message-----
> From: Alexandros Papadopoulos [mailto:apapadop at alumni.cmu.edu]
> Sent: Tuesday, November 28, 2006 11:16 AM
> To: General user list
> Subject: Re: [wplug] floppy disk rescue
>
> On Tuesday 28 November 2006 16:01, Zach wrote:
>> On 11/28/06, Jonathan S. Billings <billings at negate.org> wrote:
>> > mount -o loop /path/to/floppy.img /mnt/floppy
>>
>> What is the benefit of using the loopback versus just mounting it
>> without the "-o loop"?
>
> Can't do it any other way. A dd image is not a real device. The loopback
> driver allows you to emulate physical storage devices using plain files.
>
> -A
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