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 Post subject: Windows 8: Hard Drive Inexplicably Filling
PostPosted: Wed Oct 02, 2013 11:00 am 
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Joined: Thu Dec 23, 2004 2:34 pm
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Location: Building my 4-8-9
OS: Windows 8 Pro x64 (no 8.1), upgraded-in-place from Windows 7
Description of problem: The hard drive randomly fills, but only the C: partition (D: has data, but not Windows). It is NOT the Windows.edb search bug that was resolved in an update rollup this past May, 2013 as I checked the Windows.edb file size and it had not changed over 15 minutes while the disk was still filling.

WinDirStat reports the same level of used space as "normal," and does not show any additional files even when the drive has 160kB (yes, kilobytes) left.

Rebooting the machine makes the disk usage drop back to normal, but the drive resumes re-filling around 0.1GB/couple minutes. Sometimes the 0.1GB increment can happen as often as every few seconds. Basically, I can sit at the My Computer screen, hit refresh, and watch C: fill.

I have disconnected the machine from the internet. If malware is the cause, it is working its mischief locally. I am currently scanning using the most up-to-date version of Malwarebytes Anti-Malware.

Even when the C: partition is full, D: never gets touched.


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 Post subject: Re: Windows 8: Hard Drive Inexplicably Filling
PostPosted: Wed Oct 02, 2013 1:35 pm 
Smithfield
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Joined: Sun Jun 18, 2006 7:37 pm
Posts: 5208
My search hits keep referring to that bug with the symptoms you provided. Are you sure you actually installed the hotfix?


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 Post subject: Re: Windows 8: Hard Drive Inexplicably Filling
PostPosted: Wed Oct 02, 2013 8:15 pm 
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Downloaded.

This update is already installed.

The EDB file size did not change, as I said before, despite the disk filling.

There's not some weird bug with network drives, is there? It started happening after I mapped a network drive (always reconnect) that is rarely available... Not sure if spurious correlation, or insidious bug.


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 Post subject: Re: Windows 8: Hard Drive Inexplicably Filling
PostPosted: Thu Oct 03, 2013 4:18 am 
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UN-map the network drive and see if this issue stops...

Nasty


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 Post subject: Re: Windows 8: Hard Drive Inexplicably Filling
PostPosted: Thu Oct 03, 2013 5:24 am 
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Joined: Thu Dec 23, 2004 2:34 pm
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Location: Building my 4-8-9
Spurious correlation.

Drive continues to fill 0.1GB at a time.


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 Post subject: Re: Windows 8: Hard Drive Inexplicably Filling
PostPosted: Thu Oct 03, 2013 7:22 am 
Smithfield
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Joined: Sun Jun 18, 2006 7:37 pm
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Open up the Resource Monitor and see if there's a process that's using the disk.

Also is this on an HDD or SSD? If it's an SSD maybe it's a firmware bug?


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 Post subject: Re: Windows 8: Hard Drive Inexplicably Filling
PostPosted: Thu Oct 03, 2013 9:57 am 
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Figured it out!

If you do this: Windows Vista/7/8 Microsoft Boot Optimization...

...be sure to run the command "xbootmgr -remove" before uninstalling or modifying your installation of the Windows Performance Toolkit. If you don't, Windows will continuously generate HUGE (multi-gigabyte, disk-filling) files that mysteriously disappear on every boot, but then like a tumor, grow back!


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