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    How to fix “fdisk: unable to read /dev/sdg1: Input/output error” Ubuntu?


    by kelby232 ·

    I am trying to format a 1.5TB external hard drive in Ubuntu and I am getting the following error message through fdisk in the termainl.

    fdisk: unable to read /dev/sdg1: Input/output error

    I then tried doing it through disk utility and get the following error message:

    Error creating file system: helper exited with exit code 1: Error calling fsync(2) on /dev/sdg1: Input/output error

    In disk utility the drive shows “unknown 1.5 TB.”

    I have made sure the drive is unmounted and I tried erasing the disk which was successful but now I am unable to format it.

    I tried doing it in windows 7 and get an input/output error there as well.

    Thank you for any assistance you can give.

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