Strange Files on my Mac Hard drive

Discussion in 'Mac Basics and Help' started by Huntressdi, Feb 16, 2015.

  1. Huntressdi, Feb 16, 2015
    Last edited: Feb 16, 2015

    Huntressdi macrumors newbie

    Huntressdi

    Joined:
    Sep 16, 2010
    Location:
    Barbados
    #1
    Good day,

    Recently I have noticed these strange files showing up on my Hard Drive.I have a 27" iMac which currently has OS X 10.6.8. I don't know what causes them to show up. And they appear to be harmless but nevertheless I'd like to know what's causing them. I've attached a screenshot of my hard drives so that you can see what I mean.

    I've also attempted to open these files and here is a sample of the info found in them:

    kernel size = 5 (range 3..15)
    volume thresh = 4.0000
    t1 = 10
    gray step = 256.00
    gray diff thresh = 2560.0000
    resolution = 300
    scale = 100
    effective res = 300

    Tdustnscratch: level = 2
    Tdustnscratch: start time: Thu Feb 12 12:08:02 2015
    Tdustnscratch: begin detect: Thu Feb 12 12:08:02 2015
    Tdustnscratch: begin applyMedianFilter: Thu Feb 12 12:08:02 2015
    Tdustnscratch: end detect: Thu Feb 12 12:08:02 2015
    Tdustnscratch: begin reconstruct: Thu Feb 12 12:08:05 2015


    The info in each file looks the above and sometimes it repeats multiple times and other times it's just once or twice.

    Could someone help me please?
     

    Attached Files:

  2. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #2
    I think the clue is the "Tdustnscratch" lines.
    I will guess that you have an HP printer/scanner, and those files are probably generated when you make changes to the "dust and scratch filter" in the HP scanner software.

    Installing HP software often messes with your OS X permissions.
    Run Disk Utility, then Repair Disk Permissions.

    You can probably safely delete those files with the random characters in the name - or they may be just normal files that you will always see, just a weird bug in the HP scanner software.
    You may even check at the HP web site for updates to your printer/scanner software. The issue might be a known issue that HP has fixed with an update.
     
  3. doubledee macrumors 6502

    doubledee

    Joined:
    May 14, 2012
    Location:
    Arizona
    #3
    I second what DeltaMac said, as I have seen printers do this as well.

    Sincerely,


    Debbie
     
  4. Huntressdi thread starter macrumors newbie

    Huntressdi

    Joined:
    Sep 16, 2010
    Location:
    Barbados
    #4
    Thanks for your reply.

    @DeltaMac I do have a HP Scanner attached to my mac that has the dust and scratch filter so it may just be that after all.

    I will also check HP and see if they have an update to deal with these erroneous files.
     
  5. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #5
    I would not classify the files as "erroneous"
    They are produced by the HP software, so, at most, probably are not supposed to be visible - but likely don't indicate an error of any kind.
    And, when you know the source for files, they are no longer "strange", eh?
     

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