[all variants] External Usb Hard Drive wont mount anymore

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http://ubuntuforums.org – I have a laptop which is connected to my usb hard drive. I backed up some files to it and upon a regular reboot it is now inaccessible. I have Ubuntu and LMDE (Mint 11) installed on my laptop and both were able to access it. The following is information I am including to help someone to help me. Thank you. when I click on it I get this message: Quote: Error mounting: mount exited with exit code 13: $MFTMirr does not match $MFT (record 1). Failed to mount '/dev/sdb1': Input/output error NTFS is either inconsistent, or there is a hardware fault, or (Hardware)