Change permissions

Discussion in 'Mac Basics and Help' started by CmdrLaForge, Oct 12, 2016.

  1. CmdrLaForge macrumors 601


    Feb 26, 2003
    around the world

    I do have trouble accessing folders on my others machine time machine backup. I do not have access permissions and I do have trouble changing them. My username and passwd are different on the other machine.

    In Terminal I tried:
    sudo chown myusername foldername

    And I get back
    Operation not permitted

    In the Finder INFO window I cannot change the permissions either. Any idea what to do ? Needs some Geeks here !
  2. keysofanxiety macrumors G3


    Nov 23, 2011
    It might be worth trying to change the permissions through your other machine. So when you go to Get Info on the other Mac, add permissions for 'everyone' to read/write. Hopefully it might be as simple as that.

    Alternatively, you could check the warp nacelles or eject the core. That usually worked on TNG. :D
  3. rshrugged, Oct 12, 2016
    Last edited: Oct 12, 2016

    rshrugged macrumors 6502a

    Oct 11, 2015
    I'm not clear on if you need to change permissions. Just in case you haven't done this which results in using the TM UI for access --
    Try right-clicking on the TM dock icon, or click on the TM icon in the menu bar and press *option* (or alt) on your keyboard. After doing either, click on Browse Other Backup Disks.
  4. KALLT macrumors 601

    Sep 23, 2008
    You should never manipulate files on a Time Machine volume. OS X has mechanisms to stop you from doing that. If you want to change permissions, then you have to change the source and then let Time Machine record the changes. If you need to import directories or files, then you can use the restore function in the Time Machine application or tmutil and change the permissions as needed. Accessing another device’s Time Machine backup can be accessed as described by rshrugged.
  5. CmdrLaForge thread starter macrumors 601


    Feb 26, 2003
    around the world
    The Mac that used that external HDD is gone for good. I need to retrieve files from that time machine but do not want to get all the user data back. Actually I only need my emails from my local Mail mailboxes.

    Also the disc is encrypted but of course I have all the old passwords.
  6. KALLT macrumors 601

    Sep 23, 2008
    As I said, you can restore individual directories or files. Open the Time Machine application, navigate to the directory, right-click -> 'Restore to'.
  7. Floris macrumors 68020


    Sep 7, 2007
    chown takes username:username

    go to a dir where you made a file as that user, so you can tell in terminal how it looks normally with ls -all


    -rw-r--r--@ 1 floris staff 8520 Jan 23 2016 vbirc_pubcmd.tcl

    if you want your file to be like that:

    chown floris:staff vbirc_pubcmd.tcl

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