external hard disk

Basil Chupin blchupin at iinet.net.au
Tue Jul 20 09:03:00 UTC 2010

On 20/07/10 17:27, muhamad nabulsi wrote:
> hallo,
> i have an external hard disk which came with a software for PC.
> in the same time i made a file and i could use the totality of it 
> without installing the software that came with it...
> yesterday my friend came and also connected his hard disk to exchange 
> data between mine and his via my comp.
> after finishing the exchange of data i couldn't access to my hard disk 
> which i have all my life in it! and here is the message i received 
> each time i try to get in:
>    Unable to mount My Book
> Error mounting: mount exited with exit code 13: $MFTMirr does not 
> match $MFT (record 0).
> Failed to mount '/dev/sdb1': Input/output error
> NTFS is either inconsistent, or there is a hardware fault, or it's a
> SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows
> then reboot into Windows twice. The usage of the /f parameter is very
> important! If the device is a SoftRAID/FakeRAID then first activate
> it and mount a different device under the /dev/mapper/ directory, (e.g.
> /dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation
> for more details.
> if anyone can help me please?

If you are using Windows and simply disconnect a USB device such as the 
HD or a flash memory stick you will have trouble with having it 
recognised by, say, Linux (or vice versa for that matter I believe).

When you want to remove a USB device such as an HD you need to SAFELY 
REMOVE it and not simply unplugging it. By Safely Remove-ing it, Windows 
writes to the device showing that it no longer is used and is now "closed".

To get it "work" again, boot into Windows and then Safely Remove the device.

(Always do same when using Linux - you will see the option to either 
Eject the device (CDROM/CDRW) or Safely Remove (for anything USB0 and 
it's the last one that you need to do for an external HD connected using 

Hope this has helped.


And God created Woman; and to repent He then created Beer.

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