samsung t5 won't reconnect

Discussion in 'iMac' started by petercw2, Jun 9, 2019.

  1. petercw2, Jun 9, 2019
    Last edited: Jun 9, 2019

    petercw2 macrumors regular

    petercw2

    Joined:
    Mar 1, 2003
    #1
  2. wardie macrumors regular

    Joined:
    Aug 18, 2008
    #2
    What’s the Samsung app? I’ve never used that have just native USB3 working on same setup (I use T5 1TB as a media drive alongside internal SSD). Never had any issues, including when I had power outage, and or sleeping. 2017 iMac 27” i7. (Unlike a 2018 MM which has sleep issues with drives I’ve found).
     
  3. petercw2 thread starter macrumors regular

    petercw2

    Joined:
    Mar 1, 2003
    #3
    its very odd. when I plug the T5 back in, all I get is a "T5 Setup" mounted drive. I've tried every version of deleting the app, unplugging, plugging - and it won't see the drive other than the setup.
     
  4. chrfr macrumors 604

    Joined:
    Jul 11, 2009
    #4
    I would recommend against using Samsung security. You should not need the app at all. If you open Disk Utility, you should see the T5 there and would then be able to erase it and set it up as a proper Mac disk.
     
  5. petercw2 thread starter macrumors regular

    petercw2

    Joined:
    Mar 1, 2003
    #5
    yes, agree - but - I do have a couple of production template files I'd just created and would like to save before doing just that.

    I went back and erased system/library files and was allowed to re-install the Samsung software - but it still is showing as "disconnected".
     
  6. petercw2, Jun 10, 2019
    Last edited: Jun 10, 2019

    petercw2 thread starter macrumors regular

    petercw2

    Joined:
    Mar 1, 2003
    #6
    UPDATE: There was a software conflict between the Samsung firmware update and Mojave. Talked to Samsung who sent me the following:

    • Booting the system into recovery mode (“command + R” key + power on)
    • Open the “terminal” while in recovery mode
    • Type on the terminal : “csrutil disable”
    • Reboot the system and normal log-in
    • Re-install the PSSD SW
    • Open the “terminal” while in recovery mode
    • Type on the terminal : “csrutil enable” and rebooting
    Basically you have to turn off the file security for the whole computer, reinstall the firmware, turn back on the file security and the computer will once again see the drive. The issue was because of the conflict, I could not use the Samsung app to "unlock" my drive - which I had naively set up.
     
  7. wardie macrumors regular

    Joined:
    Aug 18, 2008
    #7
    You’re doing a firmware update on the T5? Didn’t realise macOS software via USB could do that...???
     
  8. petercw2 thread starter macrumors regular

    petercw2

    Joined:
    Mar 1, 2003
    #8
    No, the update to Mohave created a conflict with the existing Samsung app software that does the security locking.

    Once I got the data off the drive, using the above instructions, I wiped the drive and am now just using it sans the Samsung software - which is what I should have done from the start.

    Samsung knows they have the issue, have updated the firmware, for anyone who still wants to use it.
     
  9. chrfr macrumors 604

    Joined:
    Jul 11, 2009
    #9
    The Samsung utility can update firmware on the T5.
     
  10. mikehalloran macrumors 65816

    Joined:
    Oct 14, 2018
    Location:
    The Sillie Con Valley
    #10
    I would have suggested a simpler solution but the important thing is that you're up and running again.

    I had a major power outage last week while firing up a new Thunderbolt dock with two SSDs in it. Then, while repairing them, the power went out again.

    I feel your pain.

    It took a few hours but everything's good again.
     
  11. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #11
    OP wrote:
    "Basically you have to turn off the file security for the whole computer,"

    My advice is to TURN OFF SIP and LEAVE IT OFF.
    Things will go better that way.
     
  12. chrfr macrumors 604

    Joined:
    Jul 11, 2009
    #12
    There is no need for that for the vast majority of users.
     

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11 June 9, 2019