orphan disk fragments all in Mozilla directories




12 years ago
9 years ago


(Reporter: pginn, Unassigned)


2.0 Branch
Windows XP

Firefox Tracking Flags

(Not tracked)


(Whiteboard: [CLOSEME 2010-07-30])



12 years ago
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20070725 Firefox/
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20070725 Firefox/

I executed a disk defragmentation.  All but one or two of the orphan disk fragments were in Mozilla related directories !

Reproducible: Always

Steps to Reproduce:
1.Have some one else that uses Mozilla defrag their hard disk and look at the table of orphan fragments.
Was this in the disk cache ? On XP that'd be something like 

C:\Documents and Settings\<username>\Local Settings\Application Data\

Would be completely unsurprised if files in this location became fragmented, because they turn over as you browse the web.

If you mean C:\Program Files\Mozilla Firefox then that just indicates that the free space on your disk was fragmented when you installed Firefox.

Either way this doesn't seem like a bug in Firefox.
got this response via email:

Can’t answer your question immediately.

The performance of my PC was degrading.  Ie getting slower.  I ran a de-fragger and when it had finished packing the disk I was left with 100 or so fragments that had no file association but were in Mozilla directories.  I could neither copy nor print out the final report which was very frustrating in itself.  My issue is that if you use Mozilla and you are loosing disk realty to orphaned file fragments in Mozilla directories then there is a problem. If I had fragments in many different directories I would not have reported it. But 103 Mozilla fragments out of 105 is saying something.

The defraggers I've used don't report anything about lost/recovered data (in the scandisk sense, after file system errors), just which files were not successfully defragmented. If Firefox was running while you defragged then it's possible that some files could not be corrected.

Comment 3

12 years ago
I fail to see why this is a Firefox problem - an application can't create fragments on purpose, that's done by the OS. The reason that there are lots of fragments on heavily modified files (as see in the caches of various applications), is that the OS isn't very good at extending files. See bug 251876.

But /orphaned/ fragments ? Is that an indication that your filesystem was damaged (by turning off the computer when Firefox was running for instance) ? If that's the case, then it was nothing to do with disk fragmentation, it was just detected with the same tool (with confusing terminology).
This bug was originally reported on Firefox 2.x or older, which is no longer supported and will not be receiving any more updates. I strongly suggest that you update to Firefox 3.6.3 or later, update your plugins (flash, adobe, etc.), and retest in a new profile. If you still see the issue with the updated Firefox, please post here. Otherwise, please close as RESOLVED > WORKSFORME
Whiteboard: [CLOSEME 2010-07-30]
Version: unspecified → 2.0 Branch
No reply, INCOMPLETE. Please retest with Firefox 3.6.8 or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.
Last Resolved: 9 years ago
Resolution: --- → INCOMPLETE
You need to log in before you can comment on or make changes to this bug.