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From: NotSure on 27 Feb 2010 03:51

http://www.google.co.nz/search?q=dead+usb+drive
there is a suggestion to use a low-level QUICK format to revive the
dead flash drive.

My usb-pendrive is working fine. It's little blue light does exactly
what it did always,
I am sure there is just a BAD BYTE in the system area. But how to
access it?


===== original post ====

executive summary:
- Linux *fdisk* does not see the USBstick (udev does)
- (every) Windows says: This device cannot start (Code 10)

Details here http://y23.com/wiki/pmwiki.php/Main/RecoverySoftware
(output of dmesg, udevinfo, lsusb)

Knoppix, Winxp win98, HirenBootCD... a few old laptops.. available..

I'd be stoked if someone helped to recover my data, I'll gladly send
you a 2010 (or 2011) Astronomical Pocket Diary http://y23.com/apd or a
lifetime subscription to the online Astro Diary http://y23.com/apdoe
...
From: Enkidu on 27 Feb 2010 17:05
NotSure wrote:
>
> http://www.google.co.nz/search?q=dead+usb+drive there is a suggestion
> to use a low-level QUICK format to revive the dead flash drive.
>
A low level format would wipe all your data, wouldn't it?
>
> My usb-pendrive is working fine. It's little blue light does exactly
> what it did always, I am sure there is just a BAD BYTE in the system
> area. But how to access it?
>
If it were a bad byte in the system area you would usually see
*something* (eg a zero-byte size filesystem). Since you can't see
anything, even a device, the thing is probably beyond recovery.

Cheers,

Cliff

--

The ends justifies the means - Niccol� di Bernardo dei Machiavelli.

The end excuses any evil - Sophocles
From: Mark Hobley on 27 Feb 2010 18:08
NotSure <DoNotReply2Here(a)gmx.net> wrote:

> I really would like to copy the stick bit-by-bit to harddrive and then
> try to mount the image,
> if it had appeared as /dev/sda I could have done that with dd if=/
> dev/sda of=file.xyz
> right?

You tend to mount partitions, not entire drives. So unless the drive had been
formatted without a partition table, this would not have worked.

It would have been better to use:

dd if=/dev/sda1 of=file.xyz

I suspect you also did something that wrote to /dev/sda, wiping out the
partition table, rendering the drive as not recognizable from within
Microsoft Windows.

You can use drives without a partition table, but it is not a good idea if
they are intented to be moved across systems, because some systems may see
the drive as unusable or empty.

Mark.

--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/

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