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chkdsk c: /f – An Unmountable_Boot_Volume story…

I had problems with a virus recently making posts to my Facebook profile of all things. When I first noticed the problem I started going through in my head what I did in the past couple of days to expose my laptop to malware. The cause was simply down to being lax updating my AVG antivirus.  Always, Always, Always keep your anti-virus up to date

So I got home after my work day and set to work killing this virus. First came MalwareBytes which detected two malware and one trojan.

It was then time for an AVG update. After one definition update I ran the updater a second time and more definitions were installed (I’d been very lax)

All was well until I restarted the laptop. Which is when my problems started. The laptop wouldn’t boot back into the OS.

I could detect a bluescreen but couldn’t see what the error message was.

If this happens to you boot into F8 (Safe Mode) then choose the option to “Disable automatic restart on system failure” – this will give you a chance to see what’s causing the blue screen.

In my case it was an Unmountable_Boot_Volume.

I can only put this down to the virus corrupting my MBR when Malware Bytes removed it. Nasty…

So I set about booting into my WinXP setup cd to access the recovery console and run the fixmbr cmd to repair my hard disks Master Boot Record. This had no effect however. Fixboot was a non starter also.

It was at this point that I began to think I’d need something more powerful. My second thought was Microsoft must have a fix for this?

CHKDSK – chkdsk really? The program that runs when your PC restarts after it’s power plug caught your foot? Yes – That chkdsk….

http://support.microsoft.com/kb/555302

chkdsk driveletter: /f

In my case chkdsk f: /f

Damn if it didn’t work! Here’s what I got back….

chkdsk


I’ll never underestimate chkdsk again…

~ by Martin on July 3, 2011.

Security, Troubleshooting

12 Responses to “chkdsk c: /f – An Unmountable_Boot_Volume story…”

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  7. I actually have a drive that is getting stuck at the “verifying security descriptors” portion, but i have the same unmountable boot volume blue screen after the OS starts up.

    • Hi Mike,
      Have you tried “chkdsk /r”?
      I suspect you may be looking at hard disk corruption – if I were you I’d be looking at getting as many important files off my hard disk as I can. A good tool to use to copy the data off is BartPE – you can boot from CD and copy the files you need from the CD to another HD.
      Before attempting “chkdsk /r” or BartPE though I’d do a BIOS hard disk scan – if your BIOS supports it, you should be able to run what’s called a DPS self test directly from the BIOS which will firstly tell you if the disk is kaput or about to become kaput.
      So that’s DPS test, then BartPE, then chkdsk /r
      Cheers
      Martin

  8. After I initially commented I appear to have clicked the -Notify me when new comments are added- checkbox and now every time a comment is added I get four emails with the exact same comment. Is there a means you are able to remove me from that service? Thanks a lot.

    • Hi Landon,
      Try the “unsubcribe” link/button at the bottom of the e-mail you receive. That should do it.

      Cheers
      Martin

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