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RE: [PLUG] Unknown FS and mounting a Floppy
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> -----Original Message-----
> From: plug-bounces@lists.phillylinux.org
> [mailto:plug-bounces@lists.phillylinux.org]On Behalf Of sean finney
> Sent: Monday, October 17, 2005 12:13 PM
> To: Philadelphia Linux User's Group Discussion List
> Subject: Re: [PLUG] Unknown FS and mounting a Floppy
>
>
> so first things first, i'd do something like the following:
>
> dd if=/dev/fd0 of=floppy1.bin
you may also have to play with the ibs= (input block size), try
512, 1024, 2048.
I agree with this. First get it to a harddrive.
Chances are it's not in a fileformat, but rather straight data dumped to
to the floppies.
Make sure you put each floppy in it's own file.
The reason may be this could be a multi-disk backup, and if you don't have
the right order, you won't read it properly.
try:
tar -tvf filename on each image before you give up on tar
tar will attempt to figure out the block size (if from the device directly,
but if you use dd with the wrong block size, tar may not be able to read
it at all from the file)
I don't use cpio very often, and I would need to play with the
switches from 'man cpio'. If the device /dev/fd0 doesn't work
with cpio, try /dev/fd0c
tar and cpio write to floppy and/or tape as a datastream, or
sequentially, rather than in a random access method (that a
file format that would require a superblock.
>
> where fd0 is replaced with the appropriate floppy device. if you get
> i/o errors, you might want to try a program called dd_rescue
> (part of the ddrescue package in debian), which can handle bad
> media about as gracefully as possible.
>
> after you've done this, you can make as many copies of the file as you
> want, and try as many (possibly invasive) things to it as you want,
> without putting further wear on the media or risking loss of the data.
>
>
> sean
>
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