Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

Huntressdi

macrumors newbie
Original poster
Sep 16, 2010
2
0
Barbados
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?
 

Attachments

  • Screen shot 2015-02-16 at 12.21.58 PM.png
    Screen shot 2015-02-16 at 12.21.58 PM.png
    170.8 KB · Views: 121
Last edited:

DeltaMac

macrumors G5
Jul 30, 2003
13,578
4,481
Delaware
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.
 

Huntressdi

macrumors newbie
Original poster
Sep 16, 2010
2
0
Barbados
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.
 

DeltaMac

macrumors G5
Jul 30, 2003
13,578
4,481
Delaware
...
@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.

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?
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.