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dual-booting windows and fedora

asked 2015-03-01 06:22:02 -0500

bry6673 gravatar image

updated 2015-03-01 11:29:50 -0500

mether gravatar image

I am dual-booting Windows Vista and Fedora 21. I followed these steps in order:

  1. Install Windows Vista
  2. Install Fedora 21

Now when I boot up and select Windows from the GRUB select screen, I get the following message: Bootsector Write!! VIRUS: Continue (Y/N)

It displays the message every time I select Windows and I need to press Y to continue. I don't think it's a virus. I know that I can probably turn it off somewhere in the BIOS settings.

However, I'm just wondering why this is happening. I've dual-booted Windows and Linux before and I've never seen this message.

Why is this happening all of a sudden? Is there any way to check the integrity of the MBR?

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If this happens after GRUB loads, I don't think it's a BIOS thing. The BIOS has already handed off control of the system by that point.

When you say "all of a sudden" does that mean you had this dual boot situation for a while, then the message appeared, or did you recently reinstall both OSes and immediately see the message?

randomuser gravatar imagerandomuser ( 2015-03-01 14:11:33 -0500 )edit

I've only seen this message after recently reinstalling both OSes. I've tried to reinstall multiple times but the message always appears.

bry6673 gravatar imagebry6673 ( 2015-03-02 23:47:58 -0500 )edit

Haven't been able to find anything on this, is there anything I can do?

bry6673 gravatar imagebry6673 ( 2015-03-08 13:22:24 -0500 )edit

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answered 2015-03-09 10:36:36 -0500

darakus gravatar image

I don't know the exact issue, but something has detected that the way your computer is booting has changed (you changed it by installing the operating systems). By the looks of the message, I would guess it is whatever antivirus you are running on windows. I know thats not much help but it's my two cents.

You can check the integrity of your MBR on windows by running the program aswmbr. It is from avast and you can also run its antivirus/rootkit scan if you want to. Good luck.

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answered 2015-03-08 23:42:09 -0500

jrock gravatar image

If you think it might be a virus and have Norton for your Windows setup, you can enable Boot Time protection under settings - antivirus - automatic protection.

According to their website, setting this mode to Aggressive does the following:

Lets you configure Norton Security Suite to perform maximum protection during your computer start time. It ensures complete protection during the boot time as Auto-Protect starts functioning as soon as you start your computer.

Until you get more answers from the folks on the forums, it's at least something to consider.

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Asked: 2015-03-01 06:22:02 -0500

Seen: 494 times

Last updated: Mar 09 '15