Ticket #11149 (closed defect: duplicate)

Opened 10 years ago

Last modified 10 years ago

Constant disk read

Reported by: gaborca Owned by:
Component: other Version: VirtualBox 4.2.4
Keywords: disk_read Cc:
Guest type: all Host type: Windows


I have got a relatively old harddrive in my PC, and recently I noticed that it keeps constant disk reading (or writing) when I run particular programs, because it has got audible seek sounds. After investigating a bit (stopping all my software, and starting them one by one) it turned out that VirtualBox is making that noise.

To prove it, I downloaded and ran ProcMon from Microsoft (, chose Filter (ctrl+L), and added two rules: "Operation is ReadFile" and "Operation is WriteFile". VBoxSVC.exe and VirtualBox.exe make together about 300 disk reads in the ProcMon process reading refresh period (in 2 or 3 seconds). The weird thing is that both processes keep reading the same file, C:\Program Files\Oracle\VirtualBox\VBoxC.dll, about 100-200 bytes, and they start it over and over again. You can see that on the attached screenshot of ProcMon, and I also  upload that onto my website.

My host is: Windows XP SP3 This bug is present in 4.2.0 and also in 4.2.4 (the newest one) The bug is present in all guest I started (Windows XP, Debian, OpenBSD) The bug doesn't generate visible CPU load, but I fear it wears the disk


virtualbox_bug.png Download (48.1 KB) - added by gaborca 10 years ago.
Screenshot of Process Monitor showing VirtualBox constant disk reads

Change History

Changed 10 years ago by gaborca

Screenshot of Process Monitor showing VirtualBox constant disk reads

comment:1 Changed 10 years ago by frank

  • Status changed from new to closed
  • Resolution set to duplicate

Duplicate of #8298. Please continue the discussion there.

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