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When I plug in my external hard disk I get this error message:
Unable to access “1.0 TB Volume” Error mounting `/dev/sdb1` at `/media/jonny/4E1AEA7B1AEA6007`: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177" "/dev/sdb1" "/media/jonny/4E1AEA7B1AEA6007"` exited with non-zero exit status 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.
What shall I do now?