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Windows 7: TrueCrypt volume won't dismount unless I do it Forcibly


05 Oct 2009   #1

windows 7
 
 
TrueCrypt volume won't dismount unless I do it Forcibly

I installed the latest truecrypt on windows 7 rtm. I mounted a volume and when I wanted to dismount a dialog poped up and said that files within the volume were in use and whether or not I would like to forcefully dismount. I used 'unlocker' to see what could possibly be using files within the volume and the results showed that nothing was in use. I forcefully dismounted and I subsequently lost my work that was altered. I realized than unlocker was with incompatible with windows 7, after searching for a solution I found Lockhunter which is windows 7 compatible. This is what is showed me.http://www.sevenforums.com/attachmen...=1&d=1254772119. I want to know how can I disable these processes from access/locking onto files on this volume?



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My System SpecsSystem Spec
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05 Oct 2009   #2

Win7x64
 
 

Using utilities like "Unlocker" to actually "unlock" is inherently dangerous to your data.

The fact that an object is "locked" means that one or more processes/apps still expect to be able to work with that object in its present form. Those apps have registered their intentions towards the object with the OS, and in turn the OS prevents other apps from accessing the same object in an incompatible manner until the first app acknowledges that it's finished.

"Unlocker" and other similar utilities do not induce the original app to "hurry up and finish using the file". Instead, they merely delete the information record which allows the OS to keep track of that link, without regard to whether the original app is yet to save all data or anything of the sort. As you've unfortunately found out, that can lead to data corruption. Conceptually, it's not all that different to using Task Manager to terminate the first process because the second one wants access to the object.

In your example above, the active locks ("handles") are possibly caused by your anti-virus doing stuff (it can run as "system"), and an open Windows Explorer pane focused on the z: drive.
My System SpecsSystem Spec
06 Oct 2009   #3

windows 7
 
 

I've used unlocker to unlock apps like everything from being latched to a drive letter. without and lost of data. What i'm seeing now is that system processes are interfering with me dismounting my truecrypt volume safely. I need help fixing this so that I can mount and dismount a volume without and lost of data.
My System SpecsSystem Spec
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06 Oct 2009   #4

Win7x64
 
 

Quote   Quote: Originally Posted by oracle2b View Post
I've used unlocker to unlock apps like everything from being latched to a drive letter. without and lost of data.
And most of the time, Russian Roulette is an uneventful game.

Quote   Quote: Originally Posted by oracle2b View Post
What i'm seeing now is that system processes are interfering with me dismounting my truecrypt volume safely. I need help fixing this so that I can mount and dismount a volume without and lost of data.
It's not that simple. Both the System and Explorer processes may be running non-default code which is specific to your machine. If their behaviour has changed recently on your machine, the most likely cause is some type of security or inspection utility which you installed just prior to when the problem began. Uninstalling your AV and testing without it would be a good start.
My System SpecsSystem Spec
06 Oct 2009   #5

Windows 7 Ultimate x64 (Retail)
 
 

TrueCrypt is working fine for me just for mounting and unmounting an encrypted "file container".
My System SpecsSystem Spec
06 Oct 2009   #6

7600.20510 x86
 
 

AFAIK, Unlocker doesn't actually unlock anything under Win 7. It does forcibly delete stubborn files though.
My System SpecsSystem Spec
06 Oct 2009   #7

Win7x64
 
 

Quote   Quote: Originally Posted by torrentg View Post
AFAIK, Unlocker doesn't actually unlock anything under Win 7. It does forcibly delete stubborn files though.
Only because it relies on sinking a driver down into kernel-mode to do its dirty work, and the author hasn't gone through the process of getting his driver signed, so Unlocker no werky under x64. (The OP mentioned he'd gone over to another product.)

The specific utility doesn't matter though. It's the practice of forcibly closing open app handles which is potentially hazardous to data integrity, irrespective of which mechanism/utility is used to do it.

My aim is to inform, not to chastise or moralise
My System SpecsSystem Spec
07 Oct 2009   #8

windows 7
 
 

Ok I've uninstalled Avira antivirus and rebooted my laptop. I mount the truecrypt volume only to be met with the same prompt on whether i'd like to forcibly dismount the volume. The same exact processes stated in my original post are the culprits. When I connect my 2 other external usb drives I never have any difficulty ejecting/removing the device safely.
My System SpecsSystem Spec
07 Oct 2009   #9

Win7x64
 
 

Quote   Quote: Originally Posted by oracle2b View Post
Ok I've uninstalled Avira antivirus and rebooted my laptop. I mount the truecrypt volume only to be met with the same prompt on whether i'd like to forcibly dismount the volume. The same exact processes stated in my original post are the culprits. When I connect my 2 other external usb drives I never have any difficulty ejecting/removing the device safely.
Too bad. It was worth a shot.

Unfortunately, this is not an easy thing to troubleshoot. Your best bet might be to try to work out what's so special about the lone USB drive (out of 3?) that has a problem. Presumably there's something different either in content, or the way it's accessed. For example, maybe you're storing photos (exclusively) on that drive and Explorer is set to show thumbnails? Something along those lines anyway.
My System SpecsSystem Spec
13 Oct 2009   #10

windows 7
 
 

I uninstalled unlocker and the problem still exists. I posted screenshots of my running processes. If anyone could give me an idea as to what could be locking up the drive on truecrypt mounted volume, i'd really appreciate it.


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TrueCrypt volume won't dismount unless I do it Forcibly-proc1.png   TrueCrypt volume won't dismount unless I do it Forcibly-proc2.png   TrueCrypt volume won't dismount unless I do it Forcibly-proc3.png  
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 TrueCrypt volume won't dismount unless I do it Forcibly




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