I’m not sure what the error means or how to fix it.
An error occurred while accessing 'Expansion Drive', the system responded: org.freedesktop.Hal.Device.Volume.UnknownFailure: $MFTMirr does not match $MFT (record 0). Failed to mount '/dev/sdg1': InputOutput error NTFS is either inconsistent, or there is a hardware fault, or it's a SoftRAID/FakeRAID hardware.
It’s a seagate HD.
Any ideas what I can do?
I fixed it! I used the info here: [kubuntu] Help! New External Hard Drive Broke Mid-transfer [Archive] - Ubuntu Forums](http://ubuntuforums.org/archive/index.php/t-1122278.html)
Basically, you need to install “ntfsprogs” (was already installed) and then run:
#Run this to find out the name of your external HD (mine's /dev/sdg1 in this example)
sudo /sbin/fdisk -l
#Run this to fix it
sudo ntfsfix /dev/sdg1
Nice you found it.
Did you notice that you did not mention the fact that the device had an NTFS file system on it? Didn’t you know or did you try to make it more difficult to people to help you? 
Well it is somewhere in that long message, but how can one know that the error message did guess it right when something is wrong?
On 2011-09-23 12:56, hcvv wrote:
> Well it is somewhere in that long message, but how can one know that
> the error message did guess it right when something is wrong?
A bit cryptic, but the info is there. Probably would have been better to
check the partition in windows, perhaps it was removed un-safely.
–
Cheers / Saludos,
Carlos E. R.
(from 11.4 x86_64 “Celadon” at Telcontar)