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Thread: "Unable to read NTFS $Bitmap: Input/output error"

  1. #11
    Join Date
    Apr 2008

    Re: "Unable to read NTFS $Bitmap: Input/output error"

    My apologies to Mark Phelps and Jeremab. It seems there was a bug in my mental model of how Windows chkdsk interacts with pending sectors. I think I prefer bugs in the software I write to ones in my own mental software. Unless they're really egregious, they don't cause me to make a fool of myself in public quite so much.

    I'd expect a repair/reformat to get rid of most of your pending sectors, since when you write new data to them the drive can remap them, provided it's got enough spare sectors left.

    I would still advise you to keep your backups current and plan to have replace the hard disc (or the computer) eventually. Of course, this is good advice in general, but it's even more important once you've started to get bad sectors.

  2. #12
    Join Date
    Jul 2007

    Re: "Unable to read NTFS $Bitmap: Input/output error"


    I had a similar issue and the easiest solution was ntfsfix.

    In this case the hardware was known to be good. The error occured when the harddrive was unplugged without a proper shutdown.

    sudo ntfsfix /dev/sdXX
    sdXX will be something like sda1 for the first primary partition on SATA disc 1.

    To find yours, just do

    ls - la /dev/

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