Permission denied message when mounting external drive in single user mode

Discussion in 'macOS' started by garsidenrg, May 4, 2010.

  1. garsidenrg macrumors newbie

    Joined:
    May 4, 2010
    #1
    Hello.

    One day, my MacBook Air wouldn't boot up. After booting from the Install DVD and running disk utility, it said that there was a problem with the internal hard disk drive and that it needed to be reformatted and OS X reinstalled. :mad:

    I am now trying to backup some of my files onto a 1TB external hard disk drive using single user mode.

    I have created the directory with the following command...
    mkdir /Volumes/lacie

    ...and are trying to mount the drive with the following command...
    /sbin/mount_hfs /dev/disk1s1 /Volumes/lacie

    ...however, it comes back with this message when I press return:
    mount_hfs: Permission denied

    Please can somebody help. :confused:
    Thanks,
    Nigel Garside.
     
  2. mx12 macrumors newbie

    Joined:
    Oct 25, 2008
    #2
    Sudo

    Try putting sudo before you command:

    sudo /sbin/mount_hfs /dev/disk1s1 /Volumes/lacie

    This makes the command execute as a super user.
     
  3. garsidenrg thread starter macrumors newbie

    Joined:
    May 4, 2010
    #3
    still no

    No. Sorry. Doesn't work. Same message.

    Thanks for trying.
     
  4. tiiv macrumors newbie

    Joined:
    May 6, 2010
    #4
    Wrong disk name probably? Isn't it something like /dev/rdisk1s1 or the like? What devices do you have in /dev that has "disk" in its name?
     

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