Remeber: ERROR: Memory lock failed - reason unknown.

Discussion in 'Mac Basics and Help' started by dukebound85, Jan 22, 2009.

  1. dukebound85 macrumors P6

    dukebound85

    Joined:
    Jul 17, 2005
    Location:
    5045 feet above sea level
    #1
    As the title says, i get that message when selecting all in rember

    what does it mean?

    do i have bad ram?
     
  2. dukebound85 thread starter macrumors P6

    dukebound85

    Joined:
    Jul 17, 2005
    Location:
    5045 feet above sea level
    #2
    ran rember for 1 loop and this is what it resulted in


    here is the log
    I dont get why
    1) the ram didnt lock
    2) why it says 0 loops completed but 1 loop was selected
    3) why solid bits, bit spread, and walking ones do not have an "ok" to the right of them
     
  3. blekenbleu macrumors newbie

    Joined:
    Dec 18, 2010
    #3
    rember invokes memtest, which may have better documentation
    http://www.memtestosx.org/joomla/index.php

    Ram was not locked because root permission is required for locking.
    I see the same message when running e.g. memtest all 1 -L
    so need to run:

    sudo memtest all 1 -L

    Changing permissions for root-only execution on rember
    might make OSX prompt for your password and run rember as root,
    but IMO it makes little sense to test memory from a GUI,
    since the GUI is using appreciable memory which will be unavailable to test.
     
  4. create macrumors newbie

    Joined:
    Aug 22, 2011
    #4
    Nope. The reason memtest is unable to lock the memory is because you are on a 32 bit kernel and it is trying to lock more than 4GB. To change this you will need to hold the 6 and 4 keys while booting (looks like OP was using Leopard and I believe this works with that).

    Another option if yo do not want to mess with 64 bit kernel is to run multiple concurrent memtest checks for less than 4G each.
     

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