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  1. #1

    Unhappy /sdb permission denied bad super-block


    Hello everyone and thank you in advance for any advice.
    I'm running into walls in every direction lately with linux. (long story, separate thread)
    Anyway, am intending to put some files on a thumbdrive to work on independant from hard-drive. 5min before everything was cozy. Then when I moved the files, it would not paste within the file manager.
    I checked fdisk and got:
    fdisk: cannot open /dev/sda: Permission denied
    fdisk: cannot open /dev/sdb: Permission denied

    then I tried -- sudo tune2fs -l /dev/sdb
    and got:
    tune2fs 1.42.13 (17-May-2015)
    tune2fs: Bad magic number in super-block while trying to open /dev/sdb
    Couldn't find valid filesystem superblock.

    so I tried -- testdisk
    and got:
    Unable to open file or device /dev/sdb: Permission denied

    then I tried -- sudo mke2fs -n /dev/sdb1
    and got:
    /dev/sdb1 is mounted; will not make a filesystem here!

    This is not a blank disk. I emailed myself the most critical files, but would be great to not wipe it.

    So far all of the forums discuss drives that are being formatted. Can anyone offer some testing to be done or solution? I'd love to be able to edit and paste files to this drive again

  2. #2
    Linux User
    Join Date
    Jul 2016
    Posts
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    Quote Originally Posted by cad-guy View Post
    Hello everyone and thank you in advance for any advice.
    I'm running into walls in every direction lately with linux. (long story, separate thread)
    Anyway, am intending to put some files on a thumbdrive to work on independant from hard-drive. 5min before everything was cozy. Then when I moved the files, it would not paste within the file manager.
    I checked fdisk and got:
    fdisk: cannot open /dev/sda: Permission denied
    fdisk: cannot open /dev/sdb: Permission denied

    then I tried -- sudo tune2fs -l /dev/sdb
    and got:
    tune2fs 1.42.13 (17-May-2015)
    tune2fs: Bad magic number in super-block while trying to open /dev/sdb
    Couldn't find valid filesystem superblock.

    so I tried -- testdisk
    and got:
    Unable to open file or device /dev/sdb: Permission denied

    then I tried -- sudo mke2fs -n /dev/sdb1
    and got:
    /dev/sdb1 is mounted; will not make a filesystem here!

    This is not a blank disk. I emailed myself the most critical files, but would be great to not wipe it.

    So far all of the forums discuss drives that are being formatted. Can anyone offer some testing to be done or solution? I'd love to be able to edit and paste files to this drive again
    its a thumbdrive and their not reliable and never have been. either format it or throw it out, pick one.

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